binutils: CTF support for objdump and readelf
[deliverable/binutils-gdb.git] / binutils / objdump.c
1 /* objdump.c -- dump information about an object file.
2 Copyright (C) 1990-2019 Free Software Foundation, Inc.
3
4 This file is part of GNU Binutils.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* Objdump overview.
23
24 Objdump displays information about one or more object files, either on
25 their own, or inside libraries. It is commonly used as a disassembler,
26 but it can also display information about file headers, symbol tables,
27 relocations, debugging directives and more.
28
29 The flow of execution is as follows:
30
31 1. Command line arguments are checked for control switches and the
32 information to be displayed is selected.
33
34 2. Any remaining arguments are assumed to be object files, and they are
35 processed in order by display_bfd(). If the file is an archive each
36 of its elements is processed in turn.
37
38 3. The file's target architecture and binary file format are determined
39 by bfd_check_format(). If they are recognised, then dump_bfd() is
40 called.
41
42 4. dump_bfd() in turn calls separate functions to display the requested
43 item(s) of information(s). For example disassemble_data() is called if
44 a disassembly has been requested.
45
46 When disassembling the code loops through blocks of instructions bounded
47 by symbols, calling disassemble_bytes() on each block. The actual
48 disassembling is done by the libopcodes library, via a function pointer
49 supplied by the disassembler() function. */
50
51 #include "sysdep.h"
52 #include "bfd.h"
53 #include "elf-bfd.h"
54 #include "coff-bfd.h"
55 #include "progress.h"
56 #include "bucomm.h"
57 #include "elfcomm.h"
58 #include "dwarf.h"
59 #include "ctf-api.h"
60 #include "getopt.h"
61 #include "safe-ctype.h"
62 #include "dis-asm.h"
63 #include "libiberty.h"
64 #include "demangle.h"
65 #include "filenames.h"
66 #include "debug.h"
67 #include "budbg.h"
68 #include "objdump.h"
69
70 #ifdef HAVE_MMAP
71 #include <sys/mman.h>
72 #endif
73
74 /* Internal headers for the ELF .stab-dump code - sorry. */
75 #define BYTES_IN_WORD 32
76 #include "aout/aout64.h"
77
78 /* Exit status. */
79 static int exit_status = 0;
80
81 static char *default_target = NULL; /* Default at runtime. */
82
83 /* The following variables are set based on arguments passed on the
84 command line. */
85 static int show_version = 0; /* Show the version number. */
86 static int dump_section_contents; /* -s */
87 static int dump_section_headers; /* -h */
88 static bfd_boolean dump_file_header; /* -f */
89 static int dump_symtab; /* -t */
90 static int dump_dynamic_symtab; /* -T */
91 static int dump_reloc_info; /* -r */
92 static int dump_dynamic_reloc_info; /* -R */
93 static int dump_ar_hdrs; /* -a */
94 static int dump_private_headers; /* -p */
95 static char *dump_private_options; /* -P */
96 static int prefix_addresses; /* --prefix-addresses */
97 static int with_line_numbers; /* -l */
98 static bfd_boolean with_source_code; /* -S */
99 static int show_raw_insn; /* --show-raw-insn */
100 static int dump_dwarf_section_info; /* --dwarf */
101 static int dump_stab_section_info; /* --stabs */
102 static int dump_ctf_section_info; /* --ctf */
103 static char *dump_ctf_section_name;
104 static char *dump_ctf_parent_name; /* --ctf-parent */
105 static int do_demangle; /* -C, --demangle */
106 static bfd_boolean disassemble; /* -d */
107 static bfd_boolean disassemble_all; /* -D */
108 static int disassemble_zeroes; /* --disassemble-zeroes */
109 static bfd_boolean formats_info; /* -i */
110 static int wide_output; /* -w */
111 static int insn_width; /* --insn-width */
112 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
113 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
114 static int dump_debugging; /* --debugging */
115 static int dump_debugging_tags; /* --debugging-tags */
116 static int suppress_bfd_header;
117 static int dump_special_syms = 0; /* --special-syms */
118 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
119 static int file_start_context = 0; /* --file-start-context */
120 static bfd_boolean display_file_offsets;/* -F */
121 static const char *prefix; /* --prefix */
122 static int prefix_strip; /* --prefix-strip */
123 static size_t prefix_length;
124 static bfd_boolean unwind_inlines; /* --inlines. */
125 static const char * disasm_sym; /* Disassembly start symbol. */
126
127 static int demangle_flags = DMGL_ANSI | DMGL_PARAMS;
128
129 /* A structure to record the sections mentioned in -j switches. */
130 struct only
131 {
132 const char * name; /* The name of the section. */
133 bfd_boolean seen; /* A flag to indicate that the section has been found in one or more input files. */
134 struct only * next; /* Pointer to the next structure in the list. */
135 };
136 /* Pointer to an array of 'only' structures.
137 This pointer is NULL if the -j switch has not been used. */
138 static struct only * only_list = NULL;
139
140 /* Variables for handling include file path table. */
141 static const char **include_paths;
142 static int include_path_count;
143
144 /* Extra info to pass to the section disassembler and address printing
145 function. */
146 struct objdump_disasm_info
147 {
148 bfd * abfd;
149 asection * sec;
150 bfd_boolean require_sec;
151 arelent ** dynrelbuf;
152 long dynrelcount;
153 disassembler_ftype disassemble_fn;
154 arelent * reloc;
155 const char * symbol;
156 };
157
158 /* Architecture to disassemble for, or default if NULL. */
159 static char *machine = NULL;
160
161 /* Target specific options to the disassembler. */
162 static char *disassembler_options = NULL;
163
164 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
165 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
166
167 /* The symbol table. */
168 static asymbol **syms;
169
170 /* Number of symbols in `syms'. */
171 static long symcount = 0;
172
173 /* The sorted symbol table. */
174 static asymbol **sorted_syms;
175
176 /* Number of symbols in `sorted_syms'. */
177 static long sorted_symcount = 0;
178
179 /* The dynamic symbol table. */
180 static asymbol **dynsyms;
181
182 /* The synthetic symbol table. */
183 static asymbol *synthsyms;
184 static long synthcount = 0;
185
186 /* Number of symbols in `dynsyms'. */
187 static long dynsymcount = 0;
188
189 static bfd_byte *stabs;
190 static bfd_size_type stab_size;
191
192 static bfd_byte *strtab;
193 static bfd_size_type stabstr_size;
194
195 static bfd_boolean is_relocatable = FALSE;
196
197 /* Handlers for -P/--private. */
198 static const struct objdump_private_desc * const objdump_private_vectors[] =
199 {
200 OBJDUMP_PRIVATE_VECTORS
201 NULL
202 };
203 \f
204 static void usage (FILE *, int) ATTRIBUTE_NORETURN;
205 static void
206 usage (FILE *stream, int status)
207 {
208 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
209 fprintf (stream, _(" Display information from object <file(s)>.\n"));
210 fprintf (stream, _(" At least one of the following switches must be given:\n"));
211 fprintf (stream, _("\
212 -a, --archive-headers Display archive header information\n\
213 -f, --file-headers Display the contents of the overall file header\n\
214 -p, --private-headers Display object format specific file header contents\n\
215 -P, --private=OPT,OPT... Display object format specific contents\n\
216 -h, --[section-]headers Display the contents of the section headers\n\
217 -x, --all-headers Display the contents of all headers\n\
218 -d, --disassemble Display assembler contents of executable sections\n\
219 -D, --disassemble-all Display assembler contents of all sections\n\
220 --disassemble=<sym> Display assembler contents from <sym>\n\
221 -S, --source Intermix source code with disassembly\n\
222 -s, --full-contents Display the full contents of all sections requested\n\
223 -g, --debugging Display debug information in object file\n\
224 -e, --debugging-tags Display debug information using ctags style\n\
225 -G, --stabs Display (in raw form) any STABS info in the file\n\
226 -W[lLiaprmfFsoRtUuTgAckK] or\n\
227 --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
228 =frames-interp,=str,=loc,=Ranges,=pubtypes,\n\
229 =gdb_index,=trace_info,=trace_abbrev,=trace_aranges,\n\
230 =addr,=cu_index,=links,=follow-links]\n\
231 Display DWARF info in the file\n\
232 --ctf=SECTION Display CTF info from SECTION\n\
233 -t, --syms Display the contents of the symbol table(s)\n\
234 -T, --dynamic-syms Display the contents of the dynamic symbol table\n\
235 -r, --reloc Display the relocation entries in the file\n\
236 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
237 @<file> Read options from <file>\n\
238 -v, --version Display this program's version number\n\
239 -i, --info List object formats and architectures supported\n\
240 -H, --help Display this information\n\
241 "));
242 if (status != 2)
243 {
244 const struct objdump_private_desc * const *desc;
245
246 fprintf (stream, _("\n The following switches are optional:\n"));
247 fprintf (stream, _("\
248 -b, --target=BFDNAME Specify the target object format as BFDNAME\n\
249 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
250 -j, --section=NAME Only display information for section NAME\n\
251 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
252 -EB --endian=big Assume big endian format when disassembling\n\
253 -EL --endian=little Assume little endian format when disassembling\n\
254 --file-start-context Include context from start of file (with -S)\n\
255 -I, --include=DIR Add DIR to search list for source files\n\
256 -l, --line-numbers Include line numbers and filenames in output\n\
257 -F, --file-offsets Include file offsets when displaying information\n\
258 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
259 The STYLE, if specified, can be `auto', `gnu',\n\
260 `lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
261 or `gnat'\n\
262 --recurse-limit Enable a limit on recursion whilst demangling. [Default]\n\
263 --no-recurse-limit Disable a limit on recursion whilst demangling\n\
264 -w, --wide Format output for more than 80 columns\n\
265 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
266 --start-address=ADDR Only process data whose address is >= ADDR\n\
267 --stop-address=ADDR Only process data whose address is <= ADDR\n\
268 --prefix-addresses Print complete address alongside disassembly\n\
269 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
270 --insn-width=WIDTH Display WIDTH bytes on a single line for -d\n\
271 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
272 --special-syms Include special symbols in symbol dumps\n\
273 --inlines Print all inlines for source line (with -l)\n\
274 --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
275 --prefix-strip=LEVEL Strip initial directory names for -S\n"));
276 fprintf (stream, _("\
277 --dwarf-depth=N Do not display DIEs at depth N or greater\n\
278 --dwarf-start=N Display DIEs starting with N, at the same depth\n\
279 or deeper\n\
280 --dwarf-check Make additional dwarf internal consistency checks.\
281 \n\
282 --ctf-parent=SECTION Use SECTION as the CTF parent\n\n"));
283 list_supported_targets (program_name, stream);
284 list_supported_architectures (program_name, stream);
285
286 disassembler_usage (stream);
287
288 if (objdump_private_vectors[0] != NULL)
289 {
290 fprintf (stream,
291 _("\nOptions supported for -P/--private switch:\n"));
292 for (desc = objdump_private_vectors; *desc != NULL; desc++)
293 (*desc)->help (stream);
294 }
295 }
296 if (REPORT_BUGS_TO[0] && status == 0)
297 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
298 exit (status);
299 }
300
301 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
302 enum option_values
303 {
304 OPTION_ENDIAN=150,
305 OPTION_START_ADDRESS,
306 OPTION_STOP_ADDRESS,
307 OPTION_DWARF,
308 OPTION_PREFIX,
309 OPTION_PREFIX_STRIP,
310 OPTION_INSN_WIDTH,
311 OPTION_ADJUST_VMA,
312 OPTION_DWARF_DEPTH,
313 OPTION_DWARF_CHECK,
314 OPTION_DWARF_START,
315 OPTION_RECURSE_LIMIT,
316 OPTION_NO_RECURSE_LIMIT,
317 OPTION_INLINES,
318 OPTION_CTF,
319 OPTION_CTF_PARENT
320 };
321
322 static struct option long_options[]=
323 {
324 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
325 {"all-headers", no_argument, NULL, 'x'},
326 {"private-headers", no_argument, NULL, 'p'},
327 {"private", required_argument, NULL, 'P'},
328 {"architecture", required_argument, NULL, 'm'},
329 {"archive-headers", no_argument, NULL, 'a'},
330 {"debugging", no_argument, NULL, 'g'},
331 {"debugging-tags", no_argument, NULL, 'e'},
332 {"demangle", optional_argument, NULL, 'C'},
333 {"disassemble", optional_argument, NULL, 'd'},
334 {"disassemble-all", no_argument, NULL, 'D'},
335 {"disassembler-options", required_argument, NULL, 'M'},
336 {"disassemble-zeroes", no_argument, NULL, 'z'},
337 {"dynamic-reloc", no_argument, NULL, 'R'},
338 {"dynamic-syms", no_argument, NULL, 'T'},
339 {"endian", required_argument, NULL, OPTION_ENDIAN},
340 {"file-headers", no_argument, NULL, 'f'},
341 {"file-offsets", no_argument, NULL, 'F'},
342 {"file-start-context", no_argument, &file_start_context, 1},
343 {"full-contents", no_argument, NULL, 's'},
344 {"headers", no_argument, NULL, 'h'},
345 {"help", no_argument, NULL, 'H'},
346 {"info", no_argument, NULL, 'i'},
347 {"line-numbers", no_argument, NULL, 'l'},
348 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
349 {"prefix-addresses", no_argument, &prefix_addresses, 1},
350 {"recurse-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
351 {"recursion-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
352 {"no-recurse-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
353 {"no-recursion-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
354 {"reloc", no_argument, NULL, 'r'},
355 {"section", required_argument, NULL, 'j'},
356 {"section-headers", no_argument, NULL, 'h'},
357 {"show-raw-insn", no_argument, &show_raw_insn, 1},
358 {"source", no_argument, NULL, 'S'},
359 {"special-syms", no_argument, &dump_special_syms, 1},
360 {"include", required_argument, NULL, 'I'},
361 {"dwarf", optional_argument, NULL, OPTION_DWARF},
362 {"ctf", required_argument, NULL, OPTION_CTF},
363 {"ctf-parent", required_argument, NULL, OPTION_CTF_PARENT},
364 {"stabs", no_argument, NULL, 'G'},
365 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
366 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
367 {"syms", no_argument, NULL, 't'},
368 {"target", required_argument, NULL, 'b'},
369 {"version", no_argument, NULL, 'V'},
370 {"wide", no_argument, NULL, 'w'},
371 {"prefix", required_argument, NULL, OPTION_PREFIX},
372 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
373 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
374 {"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
375 {"dwarf-start", required_argument, 0, OPTION_DWARF_START},
376 {"dwarf-check", no_argument, 0, OPTION_DWARF_CHECK},
377 {"inlines", no_argument, 0, OPTION_INLINES},
378 {0, no_argument, 0, 0}
379 };
380 \f
381 static void
382 nonfatal (const char *msg)
383 {
384 bfd_nonfatal (msg);
385 exit_status = 1;
386 }
387
388 /* Returns a version of IN with any control characters
389 replaced by escape sequences. Uses a static buffer
390 if necessary. */
391
392 static const char *
393 sanitize_string (const char * in)
394 {
395 static char * buffer = NULL;
396 static size_t buffer_len = 0;
397 const char * original = in;
398 char * out;
399
400 /* Paranoia. */
401 if (in == NULL)
402 return "";
403
404 /* See if any conversion is necessary. In the majority
405 of cases it will not be needed. */
406 do
407 {
408 char c = *in++;
409
410 if (c == 0)
411 return original;
412
413 if (ISCNTRL (c))
414 break;
415 }
416 while (1);
417
418 /* Copy the input, translating as needed. */
419 in = original;
420 if (buffer_len < (strlen (in) * 2))
421 {
422 free ((void *) buffer);
423 buffer_len = strlen (in) * 2;
424 buffer = xmalloc (buffer_len + 1);
425 }
426
427 out = buffer;
428 do
429 {
430 char c = *in++;
431
432 if (c == 0)
433 break;
434
435 if (!ISCNTRL (c))
436 *out++ = c;
437 else
438 {
439 *out++ = '^';
440 *out++ = c + 0x40;
441 }
442 }
443 while (1);
444
445 *out = 0;
446 return buffer;
447 }
448
449 \f
450 /* Returns TRUE if the specified section should be dumped. */
451
452 static bfd_boolean
453 process_section_p (asection * section)
454 {
455 struct only * only;
456
457 if (only_list == NULL)
458 return TRUE;
459
460 for (only = only_list; only; only = only->next)
461 if (strcmp (only->name, section->name) == 0)
462 {
463 only->seen = TRUE;
464 return TRUE;
465 }
466
467 return FALSE;
468 }
469
470 /* Add an entry to the 'only' list. */
471
472 static void
473 add_only (char * name)
474 {
475 struct only * only;
476
477 /* First check to make sure that we do not
478 already have an entry for this name. */
479 for (only = only_list; only; only = only->next)
480 if (strcmp (only->name, name) == 0)
481 return;
482
483 only = xmalloc (sizeof * only);
484 only->name = name;
485 only->seen = FALSE;
486 only->next = only_list;
487 only_list = only;
488 }
489
490 /* Release the memory used by the 'only' list.
491 PR 11225: Issue a warning message for unseen sections.
492 Only do this if none of the sections were seen. This is mainly to support
493 tools like the GAS testsuite where an object file is dumped with a list of
494 generic section names known to be present in a range of different file
495 formats. */
496
497 static void
498 free_only_list (void)
499 {
500 bfd_boolean at_least_one_seen = FALSE;
501 struct only * only;
502 struct only * next;
503
504 if (only_list == NULL)
505 return;
506
507 for (only = only_list; only; only = only->next)
508 if (only->seen)
509 {
510 at_least_one_seen = TRUE;
511 break;
512 }
513
514 for (only = only_list; only; only = next)
515 {
516 if (! at_least_one_seen)
517 {
518 non_fatal (_("section '%s' mentioned in a -j option, "
519 "but not found in any input file"),
520 only->name);
521 exit_status = 1;
522 }
523 next = only->next;
524 free (only);
525 }
526 }
527
528 \f
529 static void
530 dump_section_header (bfd *abfd, asection *section, void *data)
531 {
532 char *comma = "";
533 unsigned int opb = bfd_octets_per_byte (abfd);
534 int longest_section_name = *((int *) data);
535
536 /* Ignore linker created section. See elfNN_ia64_object_p in
537 bfd/elfxx-ia64.c. */
538 if (section->flags & SEC_LINKER_CREATED)
539 return;
540
541 /* PR 10413: Skip sections that we are ignoring. */
542 if (! process_section_p (section))
543 return;
544
545 printf ("%3d %-*s %08lx ", section->index, longest_section_name,
546 sanitize_string (bfd_get_section_name (abfd, section)),
547 (unsigned long) bfd_section_size (abfd, section) / opb);
548 bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
549 printf (" ");
550 bfd_printf_vma (abfd, section->lma);
551 printf (" %08lx 2**%u", (unsigned long) section->filepos,
552 bfd_get_section_alignment (abfd, section));
553 if (! wide_output)
554 printf ("\n ");
555 printf (" ");
556
557 #define PF(x, y) \
558 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
559
560 PF (SEC_HAS_CONTENTS, "CONTENTS");
561 PF (SEC_ALLOC, "ALLOC");
562 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
563 PF (SEC_LOAD, "LOAD");
564 PF (SEC_RELOC, "RELOC");
565 PF (SEC_READONLY, "READONLY");
566 PF (SEC_CODE, "CODE");
567 PF (SEC_DATA, "DATA");
568 PF (SEC_ROM, "ROM");
569 PF (SEC_DEBUGGING, "DEBUGGING");
570 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
571 PF (SEC_EXCLUDE, "EXCLUDE");
572 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
573 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
574 {
575 PF (SEC_TIC54X_BLOCK, "BLOCK");
576 PF (SEC_TIC54X_CLINK, "CLINK");
577 }
578 PF (SEC_SMALL_DATA, "SMALL_DATA");
579 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
580 {
581 PF (SEC_COFF_SHARED, "SHARED");
582 PF (SEC_COFF_NOREAD, "NOREAD");
583 }
584 else if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
585 PF (SEC_ELF_PURECODE, "PURECODE");
586 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
587 PF (SEC_GROUP, "GROUP");
588 if (bfd_get_arch (abfd) == bfd_arch_mep)
589 {
590 PF (SEC_MEP_VLIW, "VLIW");
591 }
592
593 if ((section->flags & SEC_LINK_ONCE) != 0)
594 {
595 const char *ls;
596 struct coff_comdat_info *comdat;
597
598 switch (section->flags & SEC_LINK_DUPLICATES)
599 {
600 default:
601 abort ();
602 case SEC_LINK_DUPLICATES_DISCARD:
603 ls = "LINK_ONCE_DISCARD";
604 break;
605 case SEC_LINK_DUPLICATES_ONE_ONLY:
606 ls = "LINK_ONCE_ONE_ONLY";
607 break;
608 case SEC_LINK_DUPLICATES_SAME_SIZE:
609 ls = "LINK_ONCE_SAME_SIZE";
610 break;
611 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
612 ls = "LINK_ONCE_SAME_CONTENTS";
613 break;
614 }
615 printf ("%s%s", comma, ls);
616
617 comdat = bfd_coff_get_comdat_section (abfd, section);
618 if (comdat != NULL)
619 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
620
621 comma = ", ";
622 }
623
624 printf ("\n");
625 #undef PF
626 }
627
628 /* Called on each SECTION in ABFD, update the int variable pointed to by
629 DATA which contains the string length of the longest section name. */
630
631 static void
632 find_longest_section_name (bfd *abfd, asection *section, void *data)
633 {
634 int *longest_so_far = (int *) data;
635 const char *name;
636 int len;
637
638 /* Ignore linker created section. */
639 if (section->flags & SEC_LINKER_CREATED)
640 return;
641
642 /* Skip sections that we are ignoring. */
643 if (! process_section_p (section))
644 return;
645
646 name = bfd_get_section_name (abfd, section);
647 len = (int) strlen (name);
648 if (len > *longest_so_far)
649 *longest_so_far = len;
650 }
651
652 static void
653 dump_headers (bfd *abfd)
654 {
655 /* The default width of 13 is just an arbitrary choice. */
656 int max_section_name_length = 13;
657 int bfd_vma_width;
658
659 #ifndef BFD64
660 bfd_vma_width = 10;
661 #else
662 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
663 if (bfd_get_arch_size (abfd) == 32)
664 bfd_vma_width = 10;
665 else
666 bfd_vma_width = 18;
667 #endif
668
669 printf (_("Sections:\n"));
670
671 if (wide_output)
672 bfd_map_over_sections (abfd, find_longest_section_name,
673 &max_section_name_length);
674
675 printf (_("Idx %-*s Size %-*s%-*sFile off Algn"),
676 max_section_name_length, "Name",
677 bfd_vma_width, "VMA",
678 bfd_vma_width, "LMA");
679
680 if (wide_output)
681 printf (_(" Flags"));
682 printf ("\n");
683
684 bfd_map_over_sections (abfd, dump_section_header,
685 &max_section_name_length);
686 }
687 \f
688 static asymbol **
689 slurp_symtab (bfd *abfd)
690 {
691 asymbol **sy = NULL;
692 long storage;
693
694 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
695 {
696 symcount = 0;
697 return NULL;
698 }
699
700 storage = bfd_get_symtab_upper_bound (abfd);
701 if (storage < 0)
702 {
703 non_fatal (_("failed to read symbol table from: %s"), bfd_get_filename (abfd));
704 bfd_fatal (_("error message was"));
705 }
706 if (storage)
707 sy = (asymbol **) xmalloc (storage);
708
709 symcount = bfd_canonicalize_symtab (abfd, sy);
710 if (symcount < 0)
711 bfd_fatal (bfd_get_filename (abfd));
712 return sy;
713 }
714
715 /* Read in the dynamic symbols. */
716
717 static asymbol **
718 slurp_dynamic_symtab (bfd *abfd)
719 {
720 asymbol **sy = NULL;
721 long storage;
722
723 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
724 if (storage < 0)
725 {
726 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
727 {
728 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
729 exit_status = 1;
730 dynsymcount = 0;
731 return NULL;
732 }
733
734 bfd_fatal (bfd_get_filename (abfd));
735 }
736 if (storage)
737 sy = (asymbol **) xmalloc (storage);
738
739 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
740 if (dynsymcount < 0)
741 bfd_fatal (bfd_get_filename (abfd));
742 return sy;
743 }
744
745 /* Some symbol names are significant and should be kept in the
746 table of sorted symbol names, even if they are marked as
747 debugging/section symbols. */
748
749 static bfd_boolean
750 is_significant_symbol_name (const char * name)
751 {
752 return strncmp (name, ".plt", 4) == 0 || strcmp (name, ".got") == 0;
753 }
754
755 /* Filter out (in place) symbols that are useless for disassembly.
756 COUNT is the number of elements in SYMBOLS.
757 Return the number of useful symbols. */
758
759 static long
760 remove_useless_symbols (asymbol **symbols, long count)
761 {
762 asymbol **in_ptr = symbols, **out_ptr = symbols;
763
764 while (--count >= 0)
765 {
766 asymbol *sym = *in_ptr++;
767
768 if (sym->name == NULL || sym->name[0] == '\0')
769 continue;
770 if ((sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
771 && ! is_significant_symbol_name (sym->name))
772 continue;
773 if (bfd_is_und_section (sym->section)
774 || bfd_is_com_section (sym->section))
775 continue;
776
777 *out_ptr++ = sym;
778 }
779 return out_ptr - symbols;
780 }
781
782 /* Sort symbols into value order. */
783
784 static int
785 compare_symbols (const void *ap, const void *bp)
786 {
787 const asymbol *a = * (const asymbol **) ap;
788 const asymbol *b = * (const asymbol **) bp;
789 const char *an;
790 const char *bn;
791 size_t anl;
792 size_t bnl;
793 bfd_boolean af;
794 bfd_boolean bf;
795 flagword aflags;
796 flagword bflags;
797
798 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
799 return 1;
800 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
801 return -1;
802
803 if (a->section > b->section)
804 return 1;
805 else if (a->section < b->section)
806 return -1;
807
808 an = bfd_asymbol_name (a);
809 bn = bfd_asymbol_name (b);
810 anl = strlen (an);
811 bnl = strlen (bn);
812
813 /* The symbols gnu_compiled and gcc2_compiled convey no real
814 information, so put them after other symbols with the same value. */
815 af = (strstr (an, "gnu_compiled") != NULL
816 || strstr (an, "gcc2_compiled") != NULL);
817 bf = (strstr (bn, "gnu_compiled") != NULL
818 || strstr (bn, "gcc2_compiled") != NULL);
819
820 if (af && ! bf)
821 return 1;
822 if (! af && bf)
823 return -1;
824
825 /* We use a heuristic for the file name, to try to sort it after
826 more useful symbols. It may not work on non Unix systems, but it
827 doesn't really matter; the only difference is precisely which
828 symbol names get printed. */
829
830 #define file_symbol(s, sn, snl) \
831 (((s)->flags & BSF_FILE) != 0 \
832 || ((sn)[(snl) - 2] == '.' \
833 && ((sn)[(snl) - 1] == 'o' \
834 || (sn)[(snl) - 1] == 'a')))
835
836 af = file_symbol (a, an, anl);
837 bf = file_symbol (b, bn, bnl);
838
839 if (af && ! bf)
840 return 1;
841 if (! af && bf)
842 return -1;
843
844 /* Try to sort global symbols before local symbols before function
845 symbols before debugging symbols. */
846
847 aflags = a->flags;
848 bflags = b->flags;
849
850 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
851 {
852 if ((aflags & BSF_DEBUGGING) != 0)
853 return 1;
854 else
855 return -1;
856 }
857 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
858 {
859 if ((aflags & BSF_FUNCTION) != 0)
860 return -1;
861 else
862 return 1;
863 }
864 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
865 {
866 if ((aflags & BSF_LOCAL) != 0)
867 return 1;
868 else
869 return -1;
870 }
871 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
872 {
873 if ((aflags & BSF_GLOBAL) != 0)
874 return -1;
875 else
876 return 1;
877 }
878
879 if (bfd_get_flavour (bfd_asymbol_bfd (a)) == bfd_target_elf_flavour
880 && bfd_get_flavour (bfd_asymbol_bfd (b)) == bfd_target_elf_flavour)
881 {
882 bfd_vma asz, bsz;
883
884 asz = 0;
885 if ((a->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
886 asz = ((elf_symbol_type *) a)->internal_elf_sym.st_size;
887 bsz = 0;
888 if ((b->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
889 bsz = ((elf_symbol_type *) b)->internal_elf_sym.st_size;
890 if (asz != bsz)
891 return asz > bsz ? -1 : 1;
892 }
893
894 /* Symbols that start with '.' might be section names, so sort them
895 after symbols that don't start with '.'. */
896 if (an[0] == '.' && bn[0] != '.')
897 return 1;
898 if (an[0] != '.' && bn[0] == '.')
899 return -1;
900
901 /* Finally, if we can't distinguish them in any other way, try to
902 get consistent results by sorting the symbols by name. */
903 return strcmp (an, bn);
904 }
905
906 /* Sort relocs into address order. */
907
908 static int
909 compare_relocs (const void *ap, const void *bp)
910 {
911 const arelent *a = * (const arelent **) ap;
912 const arelent *b = * (const arelent **) bp;
913
914 if (a->address > b->address)
915 return 1;
916 else if (a->address < b->address)
917 return -1;
918
919 /* So that associated relocations tied to the same address show up
920 in the correct order, we don't do any further sorting. */
921 if (a > b)
922 return 1;
923 else if (a < b)
924 return -1;
925 else
926 return 0;
927 }
928
929 /* Print an address (VMA) to the output stream in INFO.
930 If SKIP_ZEROES is TRUE, omit leading zeroes. */
931
932 static void
933 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
934 bfd_boolean skip_zeroes)
935 {
936 char buf[30];
937 char *p;
938 struct objdump_disasm_info *aux;
939
940 aux = (struct objdump_disasm_info *) inf->application_data;
941 bfd_sprintf_vma (aux->abfd, buf, vma);
942 if (! skip_zeroes)
943 p = buf;
944 else
945 {
946 for (p = buf; *p == '0'; ++p)
947 ;
948 if (*p == '\0')
949 --p;
950 }
951 (*inf->fprintf_func) (inf->stream, "%s", p);
952 }
953
954 /* Print the name of a symbol. */
955
956 static void
957 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
958 asymbol *sym)
959 {
960 char *alloc;
961 const char *name, *version_string = NULL;
962 bfd_boolean hidden = FALSE;
963
964 alloc = NULL;
965 name = bfd_asymbol_name (sym);
966 if (do_demangle && name[0] != '\0')
967 {
968 /* Demangle the name. */
969 alloc = bfd_demangle (abfd, name, demangle_flags);
970 if (alloc != NULL)
971 name = alloc;
972 }
973
974 if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
975 version_string = bfd_get_symbol_version_string (abfd, sym, &hidden);
976
977 if (bfd_is_und_section (bfd_get_section (sym)))
978 hidden = TRUE;
979
980 name = sanitize_string (name);
981
982 if (inf != NULL)
983 {
984 (*inf->fprintf_func) (inf->stream, "%s", name);
985 if (version_string && *version_string != '\0')
986 (*inf->fprintf_func) (inf->stream, hidden ? "@%s" : "@@%s",
987 version_string);
988 }
989 else
990 {
991 printf ("%s", name);
992 if (version_string && *version_string != '\0')
993 printf (hidden ? "@%s" : "@@%s", version_string);
994 }
995
996 if (alloc != NULL)
997 free (alloc);
998 }
999
1000 static inline bfd_boolean
1001 sym_ok (bfd_boolean want_section,
1002 bfd * abfd ATTRIBUTE_UNUSED,
1003 long place,
1004 asection * sec,
1005 struct disassemble_info * inf)
1006 {
1007 if (want_section)
1008 {
1009 /* Note - we cannot just compare section pointers because they could
1010 be different, but the same... Ie the symbol that we are trying to
1011 find could have come from a separate debug info file. Under such
1012 circumstances the symbol will be associated with a section in the
1013 debug info file, whilst the section we want is in a normal file.
1014 So the section pointers will be different, but the section names
1015 will be the same. */
1016 if (strcmp (bfd_section_name (abfd, sorted_syms[place]->section),
1017 bfd_section_name (abfd, sec)) != 0)
1018 return FALSE;
1019 }
1020
1021 return inf->symbol_is_valid (sorted_syms[place], inf);
1022 }
1023
1024 /* Locate a symbol given a bfd and a section (from INFO->application_data),
1025 and a VMA. If INFO->application_data->require_sec is TRUE, then always
1026 require the symbol to be in the section. Returns NULL if there is no
1027 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
1028 of the symbol in sorted_syms. */
1029
1030 static asymbol *
1031 find_symbol_for_address (bfd_vma vma,
1032 struct disassemble_info *inf,
1033 long *place)
1034 {
1035 /* @@ Would it speed things up to cache the last two symbols returned,
1036 and maybe their address ranges? For many processors, only one memory
1037 operand can be present at a time, so the 2-entry cache wouldn't be
1038 constantly churned by code doing heavy memory accesses. */
1039
1040 /* Indices in `sorted_syms'. */
1041 long min = 0;
1042 long max_count = sorted_symcount;
1043 long thisplace;
1044 struct objdump_disasm_info *aux;
1045 bfd *abfd;
1046 asection *sec;
1047 unsigned int opb;
1048 bfd_boolean want_section;
1049 long rel_count;
1050
1051 if (sorted_symcount < 1)
1052 return NULL;
1053
1054 aux = (struct objdump_disasm_info *) inf->application_data;
1055 abfd = aux->abfd;
1056 sec = aux->sec;
1057 opb = inf->octets_per_byte;
1058
1059 /* Perform a binary search looking for the closest symbol to the
1060 required value. We are searching the range (min, max_count]. */
1061 while (min + 1 < max_count)
1062 {
1063 asymbol *sym;
1064
1065 thisplace = (max_count + min) / 2;
1066 sym = sorted_syms[thisplace];
1067
1068 if (bfd_asymbol_value (sym) > vma)
1069 max_count = thisplace;
1070 else if (bfd_asymbol_value (sym) < vma)
1071 min = thisplace;
1072 else
1073 {
1074 min = thisplace;
1075 break;
1076 }
1077 }
1078
1079 /* The symbol we want is now in min, the low end of the range we
1080 were searching. If there are several symbols with the same
1081 value, we want the first (non-section/non-debugging) one. */
1082 thisplace = min;
1083 while (thisplace > 0
1084 && (bfd_asymbol_value (sorted_syms[thisplace])
1085 == bfd_asymbol_value (sorted_syms[thisplace - 1]))
1086 && ((sorted_syms[thisplace - 1]->flags
1087 & (BSF_SECTION_SYM | BSF_DEBUGGING)) == 0)
1088 )
1089 --thisplace;
1090
1091 /* Prefer a symbol in the current section if we have multple symbols
1092 with the same value, as can occur with overlays or zero size
1093 sections. */
1094 min = thisplace;
1095 while (min < max_count
1096 && (bfd_asymbol_value (sorted_syms[min])
1097 == bfd_asymbol_value (sorted_syms[thisplace])))
1098 {
1099 if (sym_ok (TRUE, abfd, min, sec, inf))
1100 {
1101 thisplace = min;
1102
1103 if (place != NULL)
1104 *place = thisplace;
1105
1106 return sorted_syms[thisplace];
1107 }
1108 ++min;
1109 }
1110
1111 /* If the file is relocatable, and the symbol could be from this
1112 section, prefer a symbol from this section over symbols from
1113 others, even if the other symbol's value might be closer.
1114
1115 Note that this may be wrong for some symbol references if the
1116 sections have overlapping memory ranges, but in that case there's
1117 no way to tell what's desired without looking at the relocation
1118 table.
1119
1120 Also give the target a chance to reject symbols. */
1121 want_section = (aux->require_sec
1122 || ((abfd->flags & HAS_RELOC) != 0
1123 && vma >= bfd_get_section_vma (abfd, sec)
1124 && vma < (bfd_get_section_vma (abfd, sec)
1125 + bfd_section_size (abfd, sec) / opb)));
1126
1127 if (! sym_ok (want_section, abfd, thisplace, sec, inf))
1128 {
1129 long i;
1130 long newplace = sorted_symcount;
1131
1132 for (i = min - 1; i >= 0; i--)
1133 {
1134 if (sym_ok (want_section, abfd, i, sec, inf))
1135 {
1136 if (newplace == sorted_symcount)
1137 newplace = i;
1138
1139 if (bfd_asymbol_value (sorted_syms[i])
1140 != bfd_asymbol_value (sorted_syms[newplace]))
1141 break;
1142
1143 /* Remember this symbol and keep searching until we reach
1144 an earlier address. */
1145 newplace = i;
1146 }
1147 }
1148
1149 if (newplace != sorted_symcount)
1150 thisplace = newplace;
1151 else
1152 {
1153 /* We didn't find a good symbol with a smaller value.
1154 Look for one with a larger value. */
1155 for (i = thisplace + 1; i < sorted_symcount; i++)
1156 {
1157 if (sym_ok (want_section, abfd, i, sec, inf))
1158 {
1159 thisplace = i;
1160 break;
1161 }
1162 }
1163 }
1164
1165 if (! sym_ok (want_section, abfd, thisplace, sec, inf))
1166 /* There is no suitable symbol. */
1167 return NULL;
1168 }
1169
1170 /* If we have not found an exact match for the specified address
1171 and we have dynamic relocations available, then we can produce
1172 a better result by matching a relocation to the address and
1173 using the symbol associated with that relocation. */
1174 rel_count = aux->dynrelcount;
1175 if (!want_section
1176 && sorted_syms[thisplace]->value != vma
1177 && rel_count > 0
1178 && aux->dynrelbuf != NULL
1179 && aux->dynrelbuf[0]->address <= vma
1180 && aux->dynrelbuf[rel_count - 1]->address >= vma
1181 /* If we have matched a synthetic symbol, then stick with that. */
1182 && (sorted_syms[thisplace]->flags & BSF_SYNTHETIC) == 0)
1183 {
1184 arelent ** rel_low;
1185 arelent ** rel_high;
1186
1187 rel_low = aux->dynrelbuf;
1188 rel_high = rel_low + rel_count - 1;
1189 while (rel_low <= rel_high)
1190 {
1191 arelent **rel_mid = &rel_low[(rel_high - rel_low) / 2];
1192 arelent * rel = *rel_mid;
1193
1194 if (rel->address == vma)
1195 {
1196 /* Absolute relocations do not provide a more helpful
1197 symbolic address. Find a non-absolute relocation
1198 with the same address. */
1199 arelent **rel_vma = rel_mid;
1200 for (rel_mid--;
1201 rel_mid >= rel_low && rel_mid[0]->address == vma;
1202 rel_mid--)
1203 rel_vma = rel_mid;
1204
1205 for (; rel_vma <= rel_high && rel_vma[0]->address == vma;
1206 rel_vma++)
1207 {
1208 rel = *rel_vma;
1209 if (rel->sym_ptr_ptr != NULL
1210 && ! bfd_is_abs_section ((* rel->sym_ptr_ptr)->section))
1211 {
1212 if (place != NULL)
1213 * place = thisplace;
1214 return * rel->sym_ptr_ptr;
1215 }
1216 }
1217 break;
1218 }
1219
1220 if (vma < rel->address)
1221 rel_high = rel_mid;
1222 else if (vma >= rel_mid[1]->address)
1223 rel_low = rel_mid + 1;
1224 else
1225 break;
1226 }
1227 }
1228
1229 if (place != NULL)
1230 *place = thisplace;
1231
1232 return sorted_syms[thisplace];
1233 }
1234
1235 /* Print an address and the offset to the nearest symbol. */
1236
1237 static void
1238 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
1239 bfd_vma vma, struct disassemble_info *inf,
1240 bfd_boolean skip_zeroes)
1241 {
1242 objdump_print_value (vma, inf, skip_zeroes);
1243
1244 if (sym == NULL)
1245 {
1246 bfd_vma secaddr;
1247
1248 (*inf->fprintf_func) (inf->stream, " <%s",
1249 sanitize_string (bfd_get_section_name (abfd, sec)));
1250 secaddr = bfd_get_section_vma (abfd, sec);
1251 if (vma < secaddr)
1252 {
1253 (*inf->fprintf_func) (inf->stream, "-0x");
1254 objdump_print_value (secaddr - vma, inf, TRUE);
1255 }
1256 else if (vma > secaddr)
1257 {
1258 (*inf->fprintf_func) (inf->stream, "+0x");
1259 objdump_print_value (vma - secaddr, inf, TRUE);
1260 }
1261 (*inf->fprintf_func) (inf->stream, ">");
1262 }
1263 else
1264 {
1265 (*inf->fprintf_func) (inf->stream, " <");
1266
1267 objdump_print_symname (abfd, inf, sym);
1268
1269 if (bfd_asymbol_value (sym) == vma)
1270 ;
1271 /* Undefined symbols in an executables and dynamic objects do not have
1272 a value associated with them, so it does not make sense to display
1273 an offset relative to them. Normally we would not be provided with
1274 this kind of symbol, but the target backend might choose to do so,
1275 and the code in find_symbol_for_address might return an as yet
1276 unresolved symbol associated with a dynamic reloc. */
1277 else if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC))
1278 && bfd_is_und_section (sym->section))
1279 ;
1280 else if (bfd_asymbol_value (sym) > vma)
1281 {
1282 (*inf->fprintf_func) (inf->stream, "-0x");
1283 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, TRUE);
1284 }
1285 else if (vma > bfd_asymbol_value (sym))
1286 {
1287 (*inf->fprintf_func) (inf->stream, "+0x");
1288 objdump_print_value (vma - bfd_asymbol_value (sym), inf, TRUE);
1289 }
1290
1291 (*inf->fprintf_func) (inf->stream, ">");
1292 }
1293
1294 if (display_file_offsets)
1295 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1296 (long int)(sec->filepos + (vma - sec->vma)));
1297 }
1298
1299 /* Print an address (VMA), symbolically if possible.
1300 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
1301
1302 static void
1303 objdump_print_addr (bfd_vma vma,
1304 struct disassemble_info *inf,
1305 bfd_boolean skip_zeroes)
1306 {
1307 struct objdump_disasm_info *aux;
1308 asymbol *sym = NULL;
1309 bfd_boolean skip_find = FALSE;
1310
1311 aux = (struct objdump_disasm_info *) inf->application_data;
1312
1313 if (sorted_symcount < 1)
1314 {
1315 (*inf->fprintf_func) (inf->stream, "0x");
1316 objdump_print_value (vma, inf, skip_zeroes);
1317
1318 if (display_file_offsets)
1319 inf->fprintf_func (inf->stream, _(" (File Offset: 0x%lx)"),
1320 (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
1321 return;
1322 }
1323
1324 if (aux->reloc != NULL
1325 && aux->reloc->sym_ptr_ptr != NULL
1326 && * aux->reloc->sym_ptr_ptr != NULL)
1327 {
1328 sym = * aux->reloc->sym_ptr_ptr;
1329
1330 /* Adjust the vma to the reloc. */
1331 vma += bfd_asymbol_value (sym);
1332
1333 if (bfd_is_und_section (bfd_get_section (sym)))
1334 skip_find = TRUE;
1335 }
1336
1337 if (!skip_find)
1338 sym = find_symbol_for_address (vma, inf, NULL);
1339
1340 objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, inf,
1341 skip_zeroes);
1342 }
1343
1344 /* Print VMA to INFO. This function is passed to the disassembler
1345 routine. */
1346
1347 static void
1348 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
1349 {
1350 objdump_print_addr (vma, inf, ! prefix_addresses);
1351 }
1352
1353 /* Determine if the given address has a symbol associated with it. */
1354
1355 static int
1356 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
1357 {
1358 asymbol * sym;
1359
1360 sym = find_symbol_for_address (vma, inf, NULL);
1361
1362 return (sym != NULL && (bfd_asymbol_value (sym) == vma));
1363 }
1364
1365 /* Hold the last function name and the last line number we displayed
1366 in a disassembly. */
1367
1368 static char *prev_functionname;
1369 static unsigned int prev_line;
1370 static unsigned int prev_discriminator;
1371
1372 /* We keep a list of all files that we have seen when doing a
1373 disassembly with source, so that we know how much of the file to
1374 display. This can be important for inlined functions. */
1375
1376 struct print_file_list
1377 {
1378 struct print_file_list *next;
1379 const char *filename;
1380 const char *modname;
1381 const char *map;
1382 size_t mapsize;
1383 const char **linemap;
1384 unsigned maxline;
1385 unsigned last_line;
1386 unsigned max_printed;
1387 int first;
1388 };
1389
1390 static struct print_file_list *print_files;
1391
1392 /* The number of preceding context lines to show when we start
1393 displaying a file for the first time. */
1394
1395 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1396
1397 /* Read a complete file into memory. */
1398
1399 static const char *
1400 slurp_file (const char *fn, size_t *size, struct stat *fst)
1401 {
1402 #ifdef HAVE_MMAP
1403 int ps = getpagesize ();
1404 size_t msize;
1405 #endif
1406 const char *map;
1407 int fd = open (fn, O_RDONLY | O_BINARY);
1408
1409 if (fd < 0)
1410 return NULL;
1411 if (fstat (fd, fst) < 0)
1412 {
1413 close (fd);
1414 return NULL;
1415 }
1416 *size = fst->st_size;
1417 #ifdef HAVE_MMAP
1418 msize = (*size + ps - 1) & ~(ps - 1);
1419 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1420 if (map != (char *) -1L)
1421 {
1422 close (fd);
1423 return map;
1424 }
1425 #endif
1426 map = (const char *) malloc (*size);
1427 if (!map || (size_t) read (fd, (char *) map, *size) != *size)
1428 {
1429 free ((void *) map);
1430 map = NULL;
1431 }
1432 close (fd);
1433 return map;
1434 }
1435
1436 #define line_map_decrease 5
1437
1438 /* Precompute array of lines for a mapped file. */
1439
1440 static const char **
1441 index_file (const char *map, size_t size, unsigned int *maxline)
1442 {
1443 const char *p, *lstart, *end;
1444 int chars_per_line = 45; /* First iteration will use 40. */
1445 unsigned int lineno;
1446 const char **linemap = NULL;
1447 unsigned long line_map_size = 0;
1448
1449 lineno = 0;
1450 lstart = map;
1451 end = map + size;
1452
1453 for (p = map; p < end; p++)
1454 {
1455 if (*p == '\n')
1456 {
1457 if (p + 1 < end && p[1] == '\r')
1458 p++;
1459 }
1460 else if (*p == '\r')
1461 {
1462 if (p + 1 < end && p[1] == '\n')
1463 p++;
1464 }
1465 else
1466 continue;
1467
1468 /* End of line found. */
1469
1470 if (linemap == NULL || line_map_size < lineno + 1)
1471 {
1472 unsigned long newsize;
1473
1474 chars_per_line -= line_map_decrease;
1475 if (chars_per_line <= 1)
1476 chars_per_line = 1;
1477 line_map_size = size / chars_per_line + 1;
1478 if (line_map_size < lineno + 1)
1479 line_map_size = lineno + 1;
1480 newsize = line_map_size * sizeof (char *);
1481 linemap = (const char **) xrealloc (linemap, newsize);
1482 }
1483
1484 linemap[lineno++] = lstart;
1485 lstart = p + 1;
1486 }
1487
1488 *maxline = lineno;
1489 return linemap;
1490 }
1491
1492 /* Tries to open MODNAME, and if successful adds a node to print_files
1493 linked list and returns that node. Returns NULL on failure. */
1494
1495 static struct print_file_list *
1496 try_print_file_open (const char *origname, const char *modname, struct stat *fst)
1497 {
1498 struct print_file_list *p;
1499
1500 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
1501
1502 p->map = slurp_file (modname, &p->mapsize, fst);
1503 if (p->map == NULL)
1504 {
1505 free (p);
1506 return NULL;
1507 }
1508
1509 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
1510 p->last_line = 0;
1511 p->max_printed = 0;
1512 p->filename = origname;
1513 p->modname = modname;
1514 p->next = print_files;
1515 p->first = 1;
1516 print_files = p;
1517 return p;
1518 }
1519
1520 /* If the source file, as described in the symtab, is not found
1521 try to locate it in one of the paths specified with -I
1522 If found, add location to print_files linked list. */
1523
1524 static struct print_file_list *
1525 update_source_path (const char *filename, bfd *abfd)
1526 {
1527 struct print_file_list *p;
1528 const char *fname;
1529 struct stat fst;
1530 int i;
1531
1532 p = try_print_file_open (filename, filename, &fst);
1533 if (p == NULL)
1534 {
1535 if (include_path_count == 0)
1536 return NULL;
1537
1538 /* Get the name of the file. */
1539 fname = lbasename (filename);
1540
1541 /* If file exists under a new path, we need to add it to the list
1542 so that show_line knows about it. */
1543 for (i = 0; i < include_path_count; i++)
1544 {
1545 char *modname = concat (include_paths[i], "/", fname,
1546 (const char *) 0);
1547
1548 p = try_print_file_open (filename, modname, &fst);
1549 if (p)
1550 break;
1551
1552 free (modname);
1553 }
1554 }
1555
1556 if (p != NULL)
1557 {
1558 long mtime = bfd_get_mtime (abfd);
1559
1560 if (fst.st_mtime > mtime)
1561 warn (_("source file %s is more recent than object file\n"),
1562 filename);
1563 }
1564
1565 return p;
1566 }
1567
1568 /* Print a source file line. */
1569
1570 static void
1571 print_line (struct print_file_list *p, unsigned int linenum)
1572 {
1573 const char *l;
1574 size_t len;
1575
1576 --linenum;
1577 if (linenum >= p->maxline)
1578 return;
1579 l = p->linemap [linenum];
1580 /* Test fwrite return value to quiet glibc warning. */
1581 len = strcspn (l, "\n\r");
1582 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
1583 putchar ('\n');
1584 }
1585
1586 /* Print a range of source code lines. */
1587
1588 static void
1589 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
1590 {
1591 if (p->map == NULL)
1592 return;
1593 while (start <= end)
1594 {
1595 print_line (p, start);
1596 start++;
1597 }
1598 }
1599
1600 /* Show the line number, or the source line, in a disassembly
1601 listing. */
1602
1603 static void
1604 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
1605 {
1606 const char *filename;
1607 const char *functionname;
1608 unsigned int linenumber;
1609 unsigned int discriminator;
1610 bfd_boolean reloc;
1611 char *path = NULL;
1612
1613 if (! with_line_numbers && ! with_source_code)
1614 return;
1615
1616 if (! bfd_find_nearest_line_discriminator (abfd, section, syms, addr_offset,
1617 &filename, &functionname,
1618 &linenumber, &discriminator))
1619 return;
1620
1621 if (filename != NULL && *filename == '\0')
1622 filename = NULL;
1623 if (functionname != NULL && *functionname == '\0')
1624 functionname = NULL;
1625
1626 if (filename
1627 && IS_ABSOLUTE_PATH (filename)
1628 && prefix)
1629 {
1630 char *path_up;
1631 const char *fname = filename;
1632
1633 path = xmalloc (prefix_length + PATH_MAX + 1);
1634
1635 if (prefix_length)
1636 memcpy (path, prefix, prefix_length);
1637 path_up = path + prefix_length;
1638
1639 /* Build relocated filename, stripping off leading directories
1640 from the initial filename if requested. */
1641 if (prefix_strip > 0)
1642 {
1643 int level = 0;
1644 const char *s;
1645
1646 /* Skip selected directory levels. */
1647 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
1648 if (IS_DIR_SEPARATOR(*s))
1649 {
1650 fname = s;
1651 level++;
1652 }
1653 }
1654
1655 /* Update complete filename. */
1656 strncpy (path_up, fname, PATH_MAX);
1657 path_up[PATH_MAX] = '\0';
1658
1659 filename = path;
1660 reloc = TRUE;
1661 }
1662 else
1663 reloc = FALSE;
1664
1665 if (with_line_numbers)
1666 {
1667 if (functionname != NULL
1668 && (prev_functionname == NULL
1669 || strcmp (functionname, prev_functionname) != 0))
1670 {
1671 printf ("%s():\n", sanitize_string (functionname));
1672 prev_line = -1;
1673 }
1674 if (linenumber > 0
1675 && (linenumber != prev_line
1676 || discriminator != prev_discriminator))
1677 {
1678 if (discriminator > 0)
1679 printf ("%s:%u (discriminator %u)\n",
1680 filename == NULL ? "???" : sanitize_string (filename),
1681 linenumber, discriminator);
1682 else
1683 printf ("%s:%u\n", filename == NULL
1684 ? "???" : sanitize_string (filename),
1685 linenumber);
1686 }
1687 if (unwind_inlines)
1688 {
1689 const char *filename2;
1690 const char *functionname2;
1691 unsigned line2;
1692
1693 while (bfd_find_inliner_info (abfd, &filename2, &functionname2,
1694 &line2))
1695 {
1696 printf ("inlined by %s:%u",
1697 sanitize_string (filename2), line2);
1698 printf (" (%s)\n", sanitize_string (functionname2));
1699 }
1700 }
1701 }
1702
1703 if (with_source_code
1704 && filename != NULL
1705 && linenumber > 0)
1706 {
1707 struct print_file_list **pp, *p;
1708 unsigned l;
1709
1710 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
1711 if (filename_cmp ((*pp)->filename, filename) == 0)
1712 break;
1713 p = *pp;
1714
1715 if (p == NULL)
1716 {
1717 if (reloc)
1718 filename = xstrdup (filename);
1719 p = update_source_path (filename, abfd);
1720 }
1721
1722 if (p != NULL && linenumber != p->last_line)
1723 {
1724 if (file_start_context && p->first)
1725 l = 1;
1726 else
1727 {
1728 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
1729 if (l >= linenumber)
1730 l = 1;
1731 if (p->max_printed >= l)
1732 {
1733 if (p->max_printed < linenumber)
1734 l = p->max_printed + 1;
1735 else
1736 l = linenumber;
1737 }
1738 }
1739 dump_lines (p, l, linenumber);
1740 if (p->max_printed < linenumber)
1741 p->max_printed = linenumber;
1742 p->last_line = linenumber;
1743 p->first = 0;
1744 }
1745 }
1746
1747 if (functionname != NULL
1748 && (prev_functionname == NULL
1749 || strcmp (functionname, prev_functionname) != 0))
1750 {
1751 if (prev_functionname != NULL)
1752 free (prev_functionname);
1753 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
1754 strcpy (prev_functionname, functionname);
1755 }
1756
1757 if (linenumber > 0 && linenumber != prev_line)
1758 prev_line = linenumber;
1759
1760 if (discriminator != prev_discriminator)
1761 prev_discriminator = discriminator;
1762
1763 if (path)
1764 free (path);
1765 }
1766
1767 /* Pseudo FILE object for strings. */
1768 typedef struct
1769 {
1770 char *buffer;
1771 size_t pos;
1772 size_t alloc;
1773 } SFILE;
1774
1775 /* sprintf to a "stream". */
1776
1777 static int ATTRIBUTE_PRINTF_2
1778 objdump_sprintf (SFILE *f, const char *format, ...)
1779 {
1780 size_t n;
1781 va_list args;
1782
1783 while (1)
1784 {
1785 size_t space = f->alloc - f->pos;
1786
1787 va_start (args, format);
1788 n = vsnprintf (f->buffer + f->pos, space, format, args);
1789 va_end (args);
1790
1791 if (space > n)
1792 break;
1793
1794 f->alloc = (f->alloc + n) * 2;
1795 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
1796 }
1797 f->pos += n;
1798
1799 return n;
1800 }
1801
1802 /* The number of zeroes we want to see before we start skipping them.
1803 The number is arbitrarily chosen. */
1804
1805 #define DEFAULT_SKIP_ZEROES 8
1806
1807 /* The number of zeroes to skip at the end of a section. If the
1808 number of zeroes at the end is between SKIP_ZEROES_AT_END and
1809 SKIP_ZEROES, they will be disassembled. If there are fewer than
1810 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
1811 attempt to avoid disassembling zeroes inserted by section
1812 alignment. */
1813
1814 #define DEFAULT_SKIP_ZEROES_AT_END 3
1815
1816 /* Disassemble some data in memory between given values. */
1817
1818 static void
1819 disassemble_bytes (struct disassemble_info * inf,
1820 disassembler_ftype disassemble_fn,
1821 bfd_boolean insns,
1822 bfd_byte * data,
1823 bfd_vma start_offset,
1824 bfd_vma stop_offset,
1825 bfd_vma rel_offset,
1826 arelent *** relppp,
1827 arelent ** relppend)
1828 {
1829 struct objdump_disasm_info *aux;
1830 asection *section;
1831 int octets_per_line;
1832 int skip_addr_chars;
1833 bfd_vma addr_offset;
1834 unsigned int opb = inf->octets_per_byte;
1835 unsigned int skip_zeroes = inf->skip_zeroes;
1836 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
1837 int octets = opb;
1838 SFILE sfile;
1839
1840 aux = (struct objdump_disasm_info *) inf->application_data;
1841 section = aux->sec;
1842
1843 sfile.alloc = 120;
1844 sfile.buffer = (char *) xmalloc (sfile.alloc);
1845 sfile.pos = 0;
1846
1847 if (insn_width)
1848 octets_per_line = insn_width;
1849 else if (insns)
1850 octets_per_line = 4;
1851 else
1852 octets_per_line = 16;
1853
1854 /* Figure out how many characters to skip at the start of an
1855 address, to make the disassembly look nicer. We discard leading
1856 zeroes in chunks of 4, ensuring that there is always a leading
1857 zero remaining. */
1858 skip_addr_chars = 0;
1859 if (! prefix_addresses)
1860 {
1861 char buf[30];
1862
1863 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
1864
1865 while (buf[skip_addr_chars] == '0')
1866 ++skip_addr_chars;
1867
1868 /* Don't discard zeros on overflow. */
1869 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
1870 skip_addr_chars = 0;
1871
1872 if (skip_addr_chars != 0)
1873 skip_addr_chars = (skip_addr_chars - 1) & -4;
1874 }
1875
1876 inf->insn_info_valid = 0;
1877
1878 addr_offset = start_offset;
1879 while (addr_offset < stop_offset)
1880 {
1881 bfd_vma z;
1882 bfd_boolean need_nl = FALSE;
1883 int previous_octets;
1884
1885 /* Remember the length of the previous instruction. */
1886 previous_octets = octets;
1887 octets = 0;
1888
1889 /* Make sure we don't use relocs from previous instructions. */
1890 aux->reloc = NULL;
1891
1892 /* If we see more than SKIP_ZEROES octets of zeroes, we just
1893 print `...'. */
1894 for (z = addr_offset * opb; z < stop_offset * opb; z++)
1895 if (data[z] != 0)
1896 break;
1897 if (! disassemble_zeroes
1898 && (inf->insn_info_valid == 0
1899 || inf->branch_delay_insns == 0)
1900 && (z - addr_offset * opb >= skip_zeroes
1901 || (z == stop_offset * opb &&
1902 z - addr_offset * opb < skip_zeroes_at_end)))
1903 {
1904 /* If there are more nonzero octets to follow, we only skip
1905 zeroes in multiples of 4, to try to avoid running over
1906 the start of an instruction which happens to start with
1907 zero. */
1908 if (z != stop_offset * opb)
1909 z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
1910
1911 octets = z - addr_offset * opb;
1912
1913 /* If we are going to display more data, and we are displaying
1914 file offsets, then tell the user how many zeroes we skip
1915 and the file offset from where we resume dumping. */
1916 if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
1917 printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
1918 octets / opb,
1919 (unsigned long) (section->filepos
1920 + (addr_offset + (octets / opb))));
1921 else
1922 printf ("\t...\n");
1923 }
1924 else
1925 {
1926 char buf[50];
1927 int bpc = 0;
1928 int pb = 0;
1929
1930 if (with_line_numbers || with_source_code)
1931 show_line (aux->abfd, section, addr_offset);
1932
1933 if (! prefix_addresses)
1934 {
1935 char *s;
1936
1937 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
1938 for (s = buf + skip_addr_chars; *s == '0'; s++)
1939 *s = ' ';
1940 if (*s == '\0')
1941 *--s = '0';
1942 printf ("%s:\t", buf + skip_addr_chars);
1943 }
1944 else
1945 {
1946 aux->require_sec = TRUE;
1947 objdump_print_address (section->vma + addr_offset, inf);
1948 aux->require_sec = FALSE;
1949 putchar (' ');
1950 }
1951
1952 if (insns)
1953 {
1954 sfile.pos = 0;
1955 inf->fprintf_func = (fprintf_ftype) objdump_sprintf;
1956 inf->stream = &sfile;
1957 inf->bytes_per_line = 0;
1958 inf->bytes_per_chunk = 0;
1959 inf->flags = ((disassemble_all ? DISASSEMBLE_DATA : 0)
1960 | (wide_output ? WIDE_OUTPUT : 0));
1961 if (machine)
1962 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
1963
1964 if (inf->disassembler_needs_relocs
1965 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
1966 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
1967 && *relppp < relppend)
1968 {
1969 bfd_signed_vma distance_to_rel;
1970
1971 distance_to_rel = (**relppp)->address
1972 - (rel_offset + addr_offset);
1973
1974 /* Check to see if the current reloc is associated with
1975 the instruction that we are about to disassemble. */
1976 if (distance_to_rel == 0
1977 /* FIXME: This is wrong. We are trying to catch
1978 relocs that are addressed part way through the
1979 current instruction, as might happen with a packed
1980 VLIW instruction. Unfortunately we do not know the
1981 length of the current instruction since we have not
1982 disassembled it yet. Instead we take a guess based
1983 upon the length of the previous instruction. The
1984 proper solution is to have a new target-specific
1985 disassembler function which just returns the length
1986 of an instruction at a given address without trying
1987 to display its disassembly. */
1988 || (distance_to_rel > 0
1989 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
1990 {
1991 inf->flags |= INSN_HAS_RELOC;
1992 aux->reloc = **relppp;
1993 }
1994 }
1995
1996 if (! disassemble_all
1997 && (section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
1998 == (SEC_CODE | SEC_HAS_CONTENTS))
1999 /* Set a stop_vma so that the disassembler will not read
2000 beyond the next symbol. We assume that symbols appear on
2001 the boundaries between instructions. We only do this when
2002 disassembling code of course, and when -D is in effect. */
2003 inf->stop_vma = section->vma + stop_offset;
2004
2005 inf->stop_offset = stop_offset;
2006 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
2007
2008 inf->stop_vma = 0;
2009 inf->fprintf_func = (fprintf_ftype) fprintf;
2010 inf->stream = stdout;
2011 if (insn_width == 0 && inf->bytes_per_line != 0)
2012 octets_per_line = inf->bytes_per_line;
2013 if (octets < (int) opb)
2014 {
2015 if (sfile.pos)
2016 printf ("%s\n", sfile.buffer);
2017 if (octets >= 0)
2018 {
2019 non_fatal (_("disassemble_fn returned length %d"),
2020 octets);
2021 exit_status = 1;
2022 }
2023 break;
2024 }
2025 }
2026 else
2027 {
2028 bfd_vma j;
2029
2030 octets = octets_per_line;
2031 if (addr_offset + octets / opb > stop_offset)
2032 octets = (stop_offset - addr_offset) * opb;
2033
2034 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
2035 {
2036 if (ISPRINT (data[j]))
2037 buf[j - addr_offset * opb] = data[j];
2038 else
2039 buf[j - addr_offset * opb] = '.';
2040 }
2041 buf[j - addr_offset * opb] = '\0';
2042 }
2043
2044 if (prefix_addresses
2045 ? show_raw_insn > 0
2046 : show_raw_insn >= 0)
2047 {
2048 bfd_vma j;
2049
2050 /* If ! prefix_addresses and ! wide_output, we print
2051 octets_per_line octets per line. */
2052 pb = octets;
2053 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
2054 pb = octets_per_line;
2055
2056 if (inf->bytes_per_chunk)
2057 bpc = inf->bytes_per_chunk;
2058 else
2059 bpc = 1;
2060
2061 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
2062 {
2063 /* PR 21580: Check for a buffer ending early. */
2064 if (j + bpc <= stop_offset * opb)
2065 {
2066 int k;
2067
2068 if (inf->display_endian == BFD_ENDIAN_LITTLE)
2069 {
2070 for (k = bpc - 1; k >= 0; k--)
2071 printf ("%02x", (unsigned) data[j + k]);
2072 }
2073 else
2074 {
2075 for (k = 0; k < bpc; k++)
2076 printf ("%02x", (unsigned) data[j + k]);
2077 }
2078 }
2079 putchar (' ');
2080 }
2081
2082 for (; pb < octets_per_line; pb += bpc)
2083 {
2084 int k;
2085
2086 for (k = 0; k < bpc; k++)
2087 printf (" ");
2088 putchar (' ');
2089 }
2090
2091 /* Separate raw data from instruction by extra space. */
2092 if (insns)
2093 putchar ('\t');
2094 else
2095 printf (" ");
2096 }
2097
2098 if (! insns)
2099 printf ("%s", buf);
2100 else if (sfile.pos)
2101 printf ("%s", sfile.buffer);
2102
2103 if (prefix_addresses
2104 ? show_raw_insn > 0
2105 : show_raw_insn >= 0)
2106 {
2107 while (pb < octets)
2108 {
2109 bfd_vma j;
2110 char *s;
2111
2112 putchar ('\n');
2113 j = addr_offset * opb + pb;
2114
2115 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
2116 for (s = buf + skip_addr_chars; *s == '0'; s++)
2117 *s = ' ';
2118 if (*s == '\0')
2119 *--s = '0';
2120 printf ("%s:\t", buf + skip_addr_chars);
2121
2122 pb += octets_per_line;
2123 if (pb > octets)
2124 pb = octets;
2125 for (; j < addr_offset * opb + pb; j += bpc)
2126 {
2127 /* PR 21619: Check for a buffer ending early. */
2128 if (j + bpc <= stop_offset * opb)
2129 {
2130 int k;
2131
2132 if (inf->display_endian == BFD_ENDIAN_LITTLE)
2133 {
2134 for (k = bpc - 1; k >= 0; k--)
2135 printf ("%02x", (unsigned) data[j + k]);
2136 }
2137 else
2138 {
2139 for (k = 0; k < bpc; k++)
2140 printf ("%02x", (unsigned) data[j + k]);
2141 }
2142 }
2143 putchar (' ');
2144 }
2145 }
2146 }
2147
2148 if (!wide_output)
2149 putchar ('\n');
2150 else
2151 need_nl = TRUE;
2152 }
2153
2154 while ((*relppp) < relppend
2155 && (**relppp)->address < rel_offset + addr_offset + octets / opb)
2156 {
2157 if (dump_reloc_info || dump_dynamic_reloc_info)
2158 {
2159 arelent *q;
2160
2161 q = **relppp;
2162
2163 if (wide_output)
2164 putchar ('\t');
2165 else
2166 printf ("\t\t\t");
2167
2168 objdump_print_value (section->vma - rel_offset + q->address,
2169 inf, TRUE);
2170
2171 if (q->howto == NULL)
2172 printf (": *unknown*\t");
2173 else if (q->howto->name)
2174 printf (": %s\t", q->howto->name);
2175 else
2176 printf (": %d\t", q->howto->type);
2177
2178 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
2179 printf ("*unknown*");
2180 else
2181 {
2182 const char *sym_name;
2183
2184 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
2185 if (sym_name != NULL && *sym_name != '\0')
2186 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
2187 else
2188 {
2189 asection *sym_sec;
2190
2191 sym_sec = bfd_get_section (*q->sym_ptr_ptr);
2192 sym_name = bfd_get_section_name (aux->abfd, sym_sec);
2193 if (sym_name == NULL || *sym_name == '\0')
2194 sym_name = "*unknown*";
2195 printf ("%s", sanitize_string (sym_name));
2196 }
2197 }
2198
2199 if (q->addend)
2200 {
2201 bfd_signed_vma addend = q->addend;
2202 if (addend < 0)
2203 {
2204 printf ("-0x");
2205 addend = -addend;
2206 }
2207 else
2208 printf ("+0x");
2209 objdump_print_value (addend, inf, TRUE);
2210 }
2211
2212 printf ("\n");
2213 need_nl = FALSE;
2214 }
2215 ++(*relppp);
2216 }
2217
2218 if (need_nl)
2219 printf ("\n");
2220
2221 addr_offset += octets / opb;
2222 }
2223
2224 free (sfile.buffer);
2225 }
2226
2227 static void
2228 disassemble_section (bfd *abfd, asection *section, void *inf)
2229 {
2230 const struct elf_backend_data * bed;
2231 bfd_vma sign_adjust = 0;
2232 struct disassemble_info * pinfo = (struct disassemble_info *) inf;
2233 struct objdump_disasm_info * paux;
2234 unsigned int opb = pinfo->octets_per_byte;
2235 bfd_byte * data = NULL;
2236 bfd_size_type datasize = 0;
2237 arelent ** rel_pp = NULL;
2238 arelent ** rel_ppstart = NULL;
2239 arelent ** rel_ppend;
2240 bfd_vma stop_offset;
2241 asymbol * sym = NULL;
2242 long place = 0;
2243 long rel_count;
2244 bfd_vma rel_offset;
2245 unsigned long addr_offset;
2246 bfd_boolean do_print;
2247 enum loop_control
2248 {
2249 stop_offset_reached,
2250 function_sym,
2251 next_sym
2252 } loop_until;
2253
2254 /* Sections that do not contain machine
2255 code are not normally disassembled. */
2256 if (! disassemble_all
2257 && only_list == NULL
2258 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
2259 != (SEC_CODE | SEC_HAS_CONTENTS)))
2260 return;
2261
2262 if (! process_section_p (section))
2263 return;
2264
2265 datasize = bfd_get_section_size (section);
2266 if (datasize == 0)
2267 return;
2268
2269 if (start_address == (bfd_vma) -1
2270 || start_address < section->vma)
2271 addr_offset = 0;
2272 else
2273 addr_offset = start_address - section->vma;
2274
2275 if (stop_address == (bfd_vma) -1)
2276 stop_offset = datasize / opb;
2277 else
2278 {
2279 if (stop_address < section->vma)
2280 stop_offset = 0;
2281 else
2282 stop_offset = stop_address - section->vma;
2283 if (stop_offset > datasize / opb)
2284 stop_offset = datasize / opb;
2285 }
2286
2287 if (addr_offset >= stop_offset)
2288 return;
2289
2290 /* Decide which set of relocs to use. Load them if necessary. */
2291 paux = (struct objdump_disasm_info *) pinfo->application_data;
2292 if (paux->dynrelbuf && dump_dynamic_reloc_info)
2293 {
2294 rel_pp = paux->dynrelbuf;
2295 rel_count = paux->dynrelcount;
2296 /* Dynamic reloc addresses are absolute, non-dynamic are section
2297 relative. REL_OFFSET specifies the reloc address corresponding
2298 to the start of this section. */
2299 rel_offset = section->vma;
2300 }
2301 else
2302 {
2303 rel_count = 0;
2304 rel_pp = NULL;
2305 rel_offset = 0;
2306
2307 if ((section->flags & SEC_RELOC) != 0
2308 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
2309 {
2310 long relsize;
2311
2312 relsize = bfd_get_reloc_upper_bound (abfd, section);
2313 if (relsize < 0)
2314 bfd_fatal (bfd_get_filename (abfd));
2315
2316 if (relsize > 0)
2317 {
2318 rel_ppstart = rel_pp = (arelent **) xmalloc (relsize);
2319 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
2320 if (rel_count < 0)
2321 bfd_fatal (bfd_get_filename (abfd));
2322
2323 /* Sort the relocs by address. */
2324 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
2325 }
2326 }
2327 }
2328 rel_ppend = rel_pp + rel_count;
2329
2330 if (!bfd_malloc_and_get_section (abfd, section, &data))
2331 {
2332 non_fatal (_("Reading section %s failed because: %s"),
2333 section->name, bfd_errmsg (bfd_get_error ()));
2334 return;
2335 }
2336
2337 paux->sec = section;
2338 pinfo->buffer = data;
2339 pinfo->buffer_vma = section->vma;
2340 pinfo->buffer_length = datasize;
2341 pinfo->section = section;
2342
2343 /* Skip over the relocs belonging to addresses below the
2344 start address. */
2345 while (rel_pp < rel_ppend
2346 && (*rel_pp)->address < rel_offset + addr_offset)
2347 ++rel_pp;
2348
2349 printf (_("\nDisassembly of section %s:\n"), sanitize_string (section->name));
2350
2351 /* Find the nearest symbol forwards from our current position. */
2352 paux->require_sec = TRUE;
2353 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
2354 (struct disassemble_info *) inf,
2355 &place);
2356 paux->require_sec = FALSE;
2357
2358 /* PR 9774: If the target used signed addresses then we must make
2359 sure that we sign extend the value that we calculate for 'addr'
2360 in the loop below. */
2361 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2362 && (bed = get_elf_backend_data (abfd)) != NULL
2363 && bed->sign_extend_vma)
2364 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
2365
2366 /* Disassemble a block of instructions up to the address associated with
2367 the symbol we have just found. Then print the symbol and find the
2368 next symbol on. Repeat until we have disassembled the entire section
2369 or we have reached the end of the address range we are interested in. */
2370 do_print = paux->symbol == NULL;
2371 loop_until = stop_offset_reached;
2372
2373 while (addr_offset < stop_offset)
2374 {
2375 bfd_vma addr;
2376 asymbol *nextsym;
2377 bfd_vma nextstop_offset;
2378 bfd_boolean insns;
2379
2380 addr = section->vma + addr_offset;
2381 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
2382
2383 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
2384 {
2385 int x;
2386
2387 for (x = place;
2388 (x < sorted_symcount
2389 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
2390 ++x)
2391 continue;
2392
2393 pinfo->symbols = sorted_syms + place;
2394 pinfo->num_symbols = x - place;
2395 pinfo->symtab_pos = place;
2396 }
2397 else
2398 {
2399 pinfo->symbols = NULL;
2400 pinfo->num_symbols = 0;
2401 pinfo->symtab_pos = -1;
2402 }
2403
2404 /* If we are only disassembling from a specific symbol,
2405 check to see if we should start or stop displaying. */
2406 if (sym && paux->symbol)
2407 {
2408 if (do_print)
2409 {
2410 /* See if we should stop printing. */
2411 switch (loop_until)
2412 {
2413 case function_sym:
2414 if (sym->flags & BSF_FUNCTION)
2415 do_print = FALSE;
2416 break;
2417
2418 case stop_offset_reached:
2419 /* Handled by the while loop. */
2420 break;
2421
2422 case next_sym:
2423 /* FIXME: There is an implicit assumption here
2424 that the name of sym is different from
2425 paux->symbol. */
2426 if (! bfd_is_local_label (abfd, sym))
2427 do_print = FALSE;
2428 break;
2429 }
2430 }
2431 else
2432 {
2433 const char * name = bfd_asymbol_name (sym);
2434 char * alloc = NULL;
2435
2436 if (do_demangle && name[0] != '\0')
2437 {
2438 /* Demangle the name. */
2439 alloc = bfd_demangle (abfd, name, demangle_flags);
2440 if (alloc != NULL)
2441 name = alloc;
2442 }
2443
2444 /* We are not currently printing. Check to see
2445 if the current symbol matches the requested symbol. */
2446 if (streq (name, paux->symbol))
2447 {
2448 do_print = TRUE;
2449
2450 if (sym->flags & BSF_FUNCTION)
2451 {
2452 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2453 && ((elf_symbol_type *) sym)->internal_elf_sym.st_size > 0)
2454 {
2455 /* Sym is a function symbol with a size associated
2456 with it. Turn on automatic disassembly for the
2457 next VALUE bytes. */
2458 stop_offset = addr_offset
2459 + ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
2460 loop_until = stop_offset_reached;
2461 }
2462 else
2463 {
2464 /* Otherwise we need to tell the loop heuristic to
2465 loop until the next function symbol is encountered. */
2466 loop_until = function_sym;
2467 }
2468 }
2469 else
2470 {
2471 /* Otherwise loop until the next symbol is encountered. */
2472 loop_until = next_sym;
2473 }
2474 }
2475
2476 free (alloc);
2477 }
2478 }
2479
2480 if (! prefix_addresses && do_print)
2481 {
2482 pinfo->fprintf_func (pinfo->stream, "\n");
2483 objdump_print_addr_with_sym (abfd, section, sym, addr,
2484 pinfo, FALSE);
2485 pinfo->fprintf_func (pinfo->stream, ":\n");
2486 }
2487
2488 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2489 nextsym = sym;
2490 else if (sym == NULL)
2491 nextsym = NULL;
2492 else
2493 {
2494 #define is_valid_next_sym(SYM) \
2495 (strcmp (bfd_section_name (abfd, (SYM)->section), bfd_section_name (abfd, section)) == 0 \
2496 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
2497 && pinfo->symbol_is_valid (SYM, pinfo))
2498
2499 /* Search forward for the next appropriate symbol in
2500 SECTION. Note that all the symbols are sorted
2501 together into one big array, and that some sections
2502 may have overlapping addresses. */
2503 while (place < sorted_symcount
2504 && ! is_valid_next_sym (sorted_syms [place]))
2505 ++place;
2506
2507 if (place >= sorted_symcount)
2508 nextsym = NULL;
2509 else
2510 nextsym = sorted_syms[place];
2511 }
2512
2513 if (sym != NULL && bfd_asymbol_value (sym) > addr)
2514 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
2515 else if (nextsym == NULL)
2516 nextstop_offset = stop_offset;
2517 else
2518 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
2519
2520 if (nextstop_offset > stop_offset
2521 || nextstop_offset <= addr_offset)
2522 nextstop_offset = stop_offset;
2523
2524 /* If a symbol is explicitly marked as being an object
2525 rather than a function, just dump the bytes without
2526 disassembling them. */
2527 if (disassemble_all
2528 || sym == NULL
2529 || sym->section != section
2530 || bfd_asymbol_value (sym) > addr
2531 || ((sym->flags & BSF_OBJECT) == 0
2532 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
2533 == NULL)
2534 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
2535 == NULL))
2536 || (sym->flags & BSF_FUNCTION) != 0)
2537 insns = TRUE;
2538 else
2539 insns = FALSE;
2540
2541 if (do_print)
2542 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
2543 addr_offset, nextstop_offset,
2544 rel_offset, &rel_pp, rel_ppend);
2545
2546 addr_offset = nextstop_offset;
2547 sym = nextsym;
2548 }
2549
2550 free (data);
2551
2552 if (rel_ppstart != NULL)
2553 free (rel_ppstart);
2554 }
2555
2556 /* Disassemble the contents of an object file. */
2557
2558 static void
2559 disassemble_data (bfd *abfd)
2560 {
2561 struct disassemble_info disasm_info;
2562 struct objdump_disasm_info aux;
2563 long i;
2564
2565 print_files = NULL;
2566 prev_functionname = NULL;
2567 prev_line = -1;
2568 prev_discriminator = 0;
2569
2570 /* We make a copy of syms to sort. We don't want to sort syms
2571 because that will screw up the relocs. */
2572 sorted_symcount = symcount ? symcount : dynsymcount;
2573 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
2574 * sizeof (asymbol *));
2575 memcpy (sorted_syms, symcount ? syms : dynsyms,
2576 sorted_symcount * sizeof (asymbol *));
2577
2578 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
2579
2580 for (i = 0; i < synthcount; ++i)
2581 {
2582 sorted_syms[sorted_symcount] = synthsyms + i;
2583 ++sorted_symcount;
2584 }
2585
2586 /* Sort the symbols into section and symbol order. */
2587 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
2588
2589 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf);
2590
2591 disasm_info.application_data = (void *) &aux;
2592 aux.abfd = abfd;
2593 aux.require_sec = FALSE;
2594 aux.dynrelbuf = NULL;
2595 aux.dynrelcount = 0;
2596 aux.reloc = NULL;
2597 aux.symbol = disasm_sym;
2598
2599 disasm_info.print_address_func = objdump_print_address;
2600 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
2601
2602 if (machine != NULL)
2603 {
2604 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
2605
2606 if (inf == NULL)
2607 fatal (_("can't use supplied machine %s"), machine);
2608
2609 abfd->arch_info = inf;
2610 }
2611
2612 if (endian != BFD_ENDIAN_UNKNOWN)
2613 {
2614 struct bfd_target *xvec;
2615
2616 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
2617 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
2618 xvec->byteorder = endian;
2619 abfd->xvec = xvec;
2620 }
2621
2622 /* Use libopcodes to locate a suitable disassembler. */
2623 aux.disassemble_fn = disassembler (bfd_get_arch (abfd),
2624 bfd_big_endian (abfd),
2625 bfd_get_mach (abfd), abfd);
2626 if (!aux.disassemble_fn)
2627 {
2628 non_fatal (_("can't disassemble for architecture %s\n"),
2629 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
2630 exit_status = 1;
2631 return;
2632 }
2633
2634 disasm_info.flavour = bfd_get_flavour (abfd);
2635 disasm_info.arch = bfd_get_arch (abfd);
2636 disasm_info.mach = bfd_get_mach (abfd);
2637 disasm_info.disassembler_options = disassembler_options;
2638 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
2639 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
2640 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
2641 disasm_info.disassembler_needs_relocs = FALSE;
2642
2643 if (bfd_big_endian (abfd))
2644 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
2645 else if (bfd_little_endian (abfd))
2646 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
2647 else
2648 /* ??? Aborting here seems too drastic. We could default to big or little
2649 instead. */
2650 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
2651
2652 /* Allow the target to customize the info structure. */
2653 disassemble_init_for_target (& disasm_info);
2654
2655 /* Pre-load the dynamic relocs as we may need them during the disassembly. */
2656 {
2657 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
2658
2659 if (relsize < 0 && dump_dynamic_reloc_info)
2660 bfd_fatal (bfd_get_filename (abfd));
2661
2662 if (relsize > 0)
2663 {
2664 aux.dynrelbuf = (arelent **) xmalloc (relsize);
2665 aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
2666 aux.dynrelbuf,
2667 dynsyms);
2668 if (aux.dynrelcount < 0)
2669 bfd_fatal (bfd_get_filename (abfd));
2670
2671 /* Sort the relocs by address. */
2672 qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
2673 compare_relocs);
2674 }
2675 }
2676 disasm_info.symtab = sorted_syms;
2677 disasm_info.symtab_size = sorted_symcount;
2678
2679 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
2680
2681 if (aux.dynrelbuf != NULL)
2682 free (aux.dynrelbuf);
2683 free (sorted_syms);
2684 }
2685 \f
2686 static bfd_boolean
2687 load_specific_debug_section (enum dwarf_section_display_enum debug,
2688 asection *sec, void *file)
2689 {
2690 struct dwarf_section *section = &debug_displays [debug].section;
2691 bfd *abfd = (bfd *) file;
2692 bfd_byte *contents;
2693 bfd_size_type amt;
2694 size_t alloced;
2695
2696 if (section->start != NULL)
2697 {
2698 /* If it is already loaded, do nothing. */
2699 if (streq (section->filename, bfd_get_filename (abfd)))
2700 return TRUE;
2701 free (section->start);
2702 }
2703
2704 section->filename = bfd_get_filename (abfd);
2705 section->reloc_info = NULL;
2706 section->num_relocs = 0;
2707 section->address = bfd_get_section_vma (abfd, sec);
2708 section->user_data = sec;
2709 section->size = bfd_get_section_size (sec);
2710 /* PR 24360: On 32-bit hosts sizeof (size_t) < sizeof (bfd_size_type). */
2711 alloced = amt = section->size + 1;
2712 if (alloced != amt || alloced == 0)
2713 {
2714 section->start = NULL;
2715 free_debug_section (debug);
2716 printf (_("\nSection '%s' has an invalid size: %#llx.\n"),
2717 sanitize_string (section->name),
2718 (unsigned long long) section->size);
2719 return FALSE;
2720 }
2721 section->start = contents = malloc (alloced);
2722 if (section->start == NULL
2723 || !bfd_get_full_section_contents (abfd, sec, &contents))
2724 {
2725 free_debug_section (debug);
2726 printf (_("\nCan't get contents for section '%s'.\n"),
2727 sanitize_string (section->name));
2728 return FALSE;
2729 }
2730 /* Ensure any string section has a terminating NUL. */
2731 section->start[section->size] = 0;
2732
2733 if (is_relocatable && debug_displays [debug].relocate)
2734 {
2735 long reloc_size;
2736 bfd_boolean ret;
2737
2738 bfd_cache_section_contents (sec, section->start);
2739
2740 ret = bfd_simple_get_relocated_section_contents (abfd,
2741 sec,
2742 section->start,
2743 syms) != NULL;
2744
2745 if (! ret)
2746 {
2747 free_debug_section (debug);
2748 printf (_("\nCan't get contents for section '%s'.\n"),
2749 sanitize_string (section->name));
2750 return FALSE;
2751 }
2752
2753 reloc_size = bfd_get_reloc_upper_bound (abfd, sec);
2754 if (reloc_size > 0)
2755 {
2756 unsigned long reloc_count;
2757 arelent **relocs;
2758
2759 relocs = (arelent **) xmalloc (reloc_size);
2760
2761 reloc_count = bfd_canonicalize_reloc (abfd, sec, relocs, NULL);
2762 if (reloc_count == 0)
2763 free (relocs);
2764 else
2765 {
2766 section->reloc_info = relocs;
2767 section->num_relocs = reloc_count;
2768 }
2769 }
2770 }
2771
2772 return TRUE;
2773 }
2774
2775 bfd_boolean
2776 reloc_at (struct dwarf_section * dsec, dwarf_vma offset)
2777 {
2778 arelent ** relocs;
2779 arelent * rp;
2780
2781 if (dsec == NULL || dsec->reloc_info == NULL)
2782 return FALSE;
2783
2784 relocs = (arelent **) dsec->reloc_info;
2785
2786 for (; (rp = * relocs) != NULL; ++ relocs)
2787 if (rp->address == offset)
2788 return TRUE;
2789
2790 return FALSE;
2791 }
2792
2793 bfd_boolean
2794 load_debug_section (enum dwarf_section_display_enum debug, void *file)
2795 {
2796 struct dwarf_section *section = &debug_displays [debug].section;
2797 bfd *abfd = (bfd *) file;
2798 asection *sec;
2799
2800 /* If it is already loaded, do nothing. */
2801 if (section->start != NULL)
2802 {
2803 if (streq (section->filename, bfd_get_filename (abfd)))
2804 return TRUE;
2805 }
2806
2807 /* Locate the debug section. */
2808 sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
2809 if (sec != NULL)
2810 section->name = section->uncompressed_name;
2811 else
2812 {
2813 sec = bfd_get_section_by_name (abfd, section->compressed_name);
2814 if (sec != NULL)
2815 section->name = section->compressed_name;
2816 }
2817 if (sec == NULL)
2818 return FALSE;
2819
2820 return load_specific_debug_section (debug, sec, file);
2821 }
2822
2823 void
2824 free_debug_section (enum dwarf_section_display_enum debug)
2825 {
2826 struct dwarf_section *section = &debug_displays [debug].section;
2827
2828 if (section->start == NULL)
2829 return;
2830
2831 /* PR 17512: file: 0f67f69d. */
2832 if (section->user_data != NULL)
2833 {
2834 asection * sec = (asection *) section->user_data;
2835
2836 /* If we are freeing contents that are also pointed to by the BFD
2837 library's section structure then make sure to update those pointers
2838 too. Otherwise, the next time we try to load data for this section
2839 we can end up using a stale pointer. */
2840 if (section->start == sec->contents)
2841 {
2842 sec->contents = NULL;
2843 sec->flags &= ~ SEC_IN_MEMORY;
2844 sec->compress_status = COMPRESS_SECTION_NONE;
2845 }
2846 }
2847
2848 free ((char *) section->start);
2849 section->start = NULL;
2850 section->address = 0;
2851 section->size = 0;
2852 }
2853
2854 void
2855 close_debug_file (void * file)
2856 {
2857 bfd * abfd = (bfd *) file;
2858
2859 bfd_close (abfd);
2860 }
2861
2862 void *
2863 open_debug_file (const char * pathname)
2864 {
2865 bfd * data;
2866
2867 data = bfd_openr (pathname, NULL);
2868 if (data == NULL)
2869 return NULL;
2870
2871 if (! bfd_check_format (data, bfd_object))
2872 return NULL;
2873
2874 return data;
2875 }
2876
2877 static void
2878 dump_dwarf_section (bfd *abfd, asection *section,
2879 void *arg ATTRIBUTE_UNUSED)
2880 {
2881 const char *name = bfd_get_section_name (abfd, section);
2882 const char *match;
2883 int i;
2884
2885 if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
2886 match = ".debug_info";
2887 else
2888 match = name;
2889
2890 for (i = 0; i < max; i++)
2891 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
2892 || strcmp (debug_displays [i].section.compressed_name, match) == 0)
2893 && debug_displays [i].enabled != NULL
2894 && *debug_displays [i].enabled)
2895 {
2896 struct dwarf_section *sec = &debug_displays [i].section;
2897
2898 if (strcmp (sec->uncompressed_name, match) == 0)
2899 sec->name = sec->uncompressed_name;
2900 else
2901 sec->name = sec->compressed_name;
2902 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
2903 section, abfd))
2904 {
2905 debug_displays [i].display (sec, abfd);
2906
2907 if (i != info && i != abbrev)
2908 free_debug_section ((enum dwarf_section_display_enum) i);
2909 }
2910 break;
2911 }
2912 }
2913
2914 /* Dump the dwarf debugging information. */
2915
2916 static void
2917 dump_dwarf (bfd *abfd)
2918 {
2919 /* The byte_get pointer should have been set at the start of dump_bfd(). */
2920 if (byte_get == NULL)
2921 {
2922 warn (_("File %s does not contain any dwarf debug information\n"),
2923 bfd_get_filename (abfd));
2924 return;
2925 }
2926
2927 is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2928
2929 eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
2930
2931 switch (bfd_get_arch (abfd))
2932 {
2933 case bfd_arch_i386:
2934 switch (bfd_get_mach (abfd))
2935 {
2936 case bfd_mach_x86_64:
2937 case bfd_mach_x86_64_intel_syntax:
2938 case bfd_mach_x86_64_nacl:
2939 case bfd_mach_x64_32:
2940 case bfd_mach_x64_32_intel_syntax:
2941 case bfd_mach_x64_32_nacl:
2942 init_dwarf_regnames_x86_64 ();
2943 break;
2944
2945 default:
2946 init_dwarf_regnames_i386 ();
2947 break;
2948 }
2949 break;
2950
2951 case bfd_arch_iamcu:
2952 init_dwarf_regnames_iamcu ();
2953 break;
2954
2955 case bfd_arch_aarch64:
2956 init_dwarf_regnames_aarch64();
2957 break;
2958
2959 case bfd_arch_s390:
2960 init_dwarf_regnames_s390 ();
2961 break;
2962
2963 case bfd_arch_riscv:
2964 init_dwarf_regnames_riscv ();
2965 break;
2966
2967 case bfd_arch_s12z:
2968 /* S12Z has a 24 bit address space. But the only known
2969 producer of dwarf_info encodes addresses into 32 bits. */
2970 eh_addr_size = 4;
2971 break;
2972
2973 default:
2974 break;
2975 }
2976
2977 bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
2978 }
2979 \f
2980 /* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
2981 it. Return NULL on failure. */
2982
2983 static bfd_byte *
2984 read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr,
2985 bfd_size_type *entsize_ptr)
2986 {
2987 asection *stabsect;
2988 bfd_byte *contents;
2989
2990 stabsect = bfd_get_section_by_name (abfd, sect_name);
2991 if (stabsect == NULL)
2992 {
2993 printf (_("No %s section present\n\n"),
2994 sanitize_string (sect_name));
2995 return FALSE;
2996 }
2997
2998 if (!bfd_malloc_and_get_section (abfd, stabsect, &contents))
2999 {
3000 non_fatal (_("reading %s section of %s failed: %s"),
3001 sect_name, bfd_get_filename (abfd),
3002 bfd_errmsg (bfd_get_error ()));
3003 exit_status = 1;
3004 free (contents);
3005 return NULL;
3006 }
3007
3008 *size_ptr = bfd_section_size (abfd, stabsect);
3009 if (entsize_ptr)
3010 *entsize_ptr = stabsect->entsize;
3011
3012 return contents;
3013 }
3014
3015 /* Stabs entries use a 12 byte format:
3016 4 byte string table index
3017 1 byte stab type
3018 1 byte stab other field
3019 2 byte stab desc field
3020 4 byte stab value
3021 FIXME: This will have to change for a 64 bit object format. */
3022
3023 #define STRDXOFF (0)
3024 #define TYPEOFF (4)
3025 #define OTHEROFF (5)
3026 #define DESCOFF (6)
3027 #define VALOFF (8)
3028 #define STABSIZE (12)
3029
3030 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
3031 using string table section STRSECT_NAME (in `strtab'). */
3032
3033 static void
3034 print_section_stabs (bfd *abfd,
3035 const char *stabsect_name,
3036 unsigned *string_offset_ptr)
3037 {
3038 int i;
3039 unsigned file_string_table_offset = 0;
3040 unsigned next_file_string_table_offset = *string_offset_ptr;
3041 bfd_byte *stabp, *stabs_end;
3042
3043 stabp = stabs;
3044 stabs_end = stabp + stab_size;
3045
3046 printf (_("Contents of %s section:\n\n"), sanitize_string (stabsect_name));
3047 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
3048
3049 /* Loop through all symbols and print them.
3050
3051 We start the index at -1 because there is a dummy symbol on
3052 the front of stabs-in-{coff,elf} sections that supplies sizes. */
3053 for (i = -1; stabp <= stabs_end - STABSIZE; stabp += STABSIZE, i++)
3054 {
3055 const char *name;
3056 unsigned long strx;
3057 unsigned char type, other;
3058 unsigned short desc;
3059 bfd_vma value;
3060
3061 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
3062 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
3063 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
3064 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
3065 value = bfd_h_get_32 (abfd, stabp + VALOFF);
3066
3067 printf ("\n%-6d ", i);
3068 /* Either print the stab name, or, if unnamed, print its number
3069 again (makes consistent formatting for tools like awk). */
3070 name = bfd_get_stab_name (type);
3071 if (name != NULL)
3072 printf ("%-6s", sanitize_string (name));
3073 else if (type == N_UNDF)
3074 printf ("HdrSym");
3075 else
3076 printf ("%-6d", type);
3077 printf (" %-6d %-6d ", other, desc);
3078 bfd_printf_vma (abfd, value);
3079 printf (" %-6lu", strx);
3080
3081 /* Symbols with type == 0 (N_UNDF) specify the length of the
3082 string table associated with this file. We use that info
3083 to know how to relocate the *next* file's string table indices. */
3084 if (type == N_UNDF)
3085 {
3086 file_string_table_offset = next_file_string_table_offset;
3087 next_file_string_table_offset += value;
3088 }
3089 else
3090 {
3091 bfd_size_type amt = strx + file_string_table_offset;
3092
3093 /* Using the (possibly updated) string table offset, print the
3094 string (if any) associated with this symbol. */
3095 if (amt < stabstr_size)
3096 /* PR 17512: file: 079-79389-0.001:0.1.
3097 FIXME: May need to sanitize this string before displaying. */
3098 printf (" %.*s", (int)(stabstr_size - amt), strtab + amt);
3099 else
3100 printf (" *");
3101 }
3102 }
3103 printf ("\n\n");
3104 *string_offset_ptr = next_file_string_table_offset;
3105 }
3106
3107 typedef struct
3108 {
3109 const char * section_name;
3110 const char * string_section_name;
3111 unsigned string_offset;
3112 }
3113 stab_section_names;
3114
3115 static void
3116 find_stabs_section (bfd *abfd, asection *section, void *names)
3117 {
3118 int len;
3119 stab_section_names * sought = (stab_section_names *) names;
3120
3121 /* Check for section names for which stabsect_name is a prefix, to
3122 handle .stab.N, etc. */
3123 len = strlen (sought->section_name);
3124
3125 /* If the prefix matches, and the files section name ends with a
3126 nul or a digit, then we match. I.e., we want either an exact
3127 match or a section followed by a number. */
3128 if (strncmp (sought->section_name, section->name, len) == 0
3129 && (section->name[len] == 0
3130 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
3131 {
3132 if (strtab == NULL)
3133 strtab = read_section_stabs (abfd, sought->string_section_name,
3134 &stabstr_size, NULL);
3135
3136 if (strtab)
3137 {
3138 stabs = read_section_stabs (abfd, section->name, &stab_size, NULL);
3139 if (stabs)
3140 print_section_stabs (abfd, section->name, &sought->string_offset);
3141 }
3142 }
3143 }
3144
3145 static void
3146 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
3147 {
3148 stab_section_names s;
3149
3150 s.section_name = stabsect_name;
3151 s.string_section_name = strsect_name;
3152 s.string_offset = 0;
3153
3154 bfd_map_over_sections (abfd, find_stabs_section, & s);
3155
3156 free (strtab);
3157 strtab = NULL;
3158 }
3159
3160 /* Dump the any sections containing stabs debugging information. */
3161
3162 static void
3163 dump_stabs (bfd *abfd)
3164 {
3165 dump_stabs_section (abfd, ".stab", ".stabstr");
3166 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
3167 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
3168
3169 /* For Darwin. */
3170 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
3171
3172 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
3173 }
3174 \f
3175 static void
3176 dump_bfd_header (bfd *abfd)
3177 {
3178 char *comma = "";
3179
3180 printf (_("architecture: %s, "),
3181 bfd_printable_arch_mach (bfd_get_arch (abfd),
3182 bfd_get_mach (abfd)));
3183 printf (_("flags 0x%08x:\n"), abfd->flags & ~BFD_FLAGS_FOR_BFD_USE_MASK);
3184
3185 #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
3186 PF (HAS_RELOC, "HAS_RELOC");
3187 PF (EXEC_P, "EXEC_P");
3188 PF (HAS_LINENO, "HAS_LINENO");
3189 PF (HAS_DEBUG, "HAS_DEBUG");
3190 PF (HAS_SYMS, "HAS_SYMS");
3191 PF (HAS_LOCALS, "HAS_LOCALS");
3192 PF (DYNAMIC, "DYNAMIC");
3193 PF (WP_TEXT, "WP_TEXT");
3194 PF (D_PAGED, "D_PAGED");
3195 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
3196 printf (_("\nstart address 0x"));
3197 bfd_printf_vma (abfd, abfd->start_address);
3198 printf ("\n");
3199 }
3200 \f
3201
3202 /* Formatting callback function passed to ctf_dump. Returns either the pointer
3203 it is passed, or a pointer to newly-allocated storage, in which case
3204 dump_ctf() will free it when it no longer needs it. */
3205
3206 static char *
3207 dump_ctf_indent_lines (ctf_sect_names_t sect ATTRIBUTE_UNUSED,
3208 char *s, void *arg)
3209 {
3210 char *spaces = arg;
3211 char *new_s;
3212
3213 if (asprintf (&new_s, "%s%s", spaces, s) < 0)
3214 return s;
3215 return new_s;
3216 }
3217
3218 /* Make a ctfsect suitable for ctf_bfdopen_ctfsect(). */
3219 static ctf_sect_t
3220 make_ctfsect (const char *name, bfd_byte *data,
3221 bfd_size_type size)
3222 {
3223 ctf_sect_t ctfsect;
3224
3225 ctfsect.cts_name = name;
3226 ctfsect.cts_type = SHT_PROGBITS;
3227 ctfsect.cts_flags = 0;
3228 ctfsect.cts_entsize = 1;
3229 ctfsect.cts_offset = 0;
3230 ctfsect.cts_size = size;
3231 ctfsect.cts_data = data;
3232
3233 return ctfsect;
3234 }
3235
3236 /* Dump one CTF archive member. */
3237
3238 static int
3239 dump_ctf_archive_member (ctf_file_t *ctf, const char *name, void *arg)
3240 {
3241 ctf_file_t *parent = (ctf_file_t *) arg;
3242 const char *things[] = {"Labels", "Data objects", "Function objects",
3243 "Variables", "Types", "Strings", ""};
3244 const char **thing;
3245 size_t i;
3246
3247 /* Only print out the name of non-default-named archive members.
3248 The name .ctf appears everywhere, even for things that aren't
3249 really archives, so printing it out is liable to be confusing. */
3250 if (strcmp (name, ".ctf") != 0)
3251 printf (_("\nCTF archive member: %s:\n"), sanitize_string (name));
3252
3253 ctf_import (ctf, parent);
3254 for (i = 1, thing = things; *thing[0]; thing++, i++)
3255 {
3256 ctf_dump_state_t *s = NULL;
3257 char *item;
3258
3259 printf ("\n %s:\n", *thing);
3260 while ((item = ctf_dump (ctf, &s, i, dump_ctf_indent_lines,
3261 (void *) " ")) != NULL)
3262 {
3263 printf ("%s\n", item);
3264 free (item);
3265 }
3266
3267 if (ctf_errno (ctf))
3268 {
3269 non_fatal (_("Iteration failed: %s, %s\n"), *thing,
3270 ctf_errmsg (ctf_errno (ctf)));
3271 break;
3272 }
3273 }
3274 return 0;
3275 }
3276
3277 /* Dump the CTF debugging information. */
3278
3279 static void
3280 dump_ctf (bfd *abfd, const char *sect_name, const char *parent_name)
3281 {
3282 ctf_archive_t *ctfa, *parenta = NULL;
3283 bfd_byte *ctfdata, *parentdata = NULL;
3284 bfd_size_type ctfsize, parentsize;
3285 ctf_sect_t ctfsect;
3286 ctf_file_t *parent = NULL;
3287 int err;
3288
3289 if ((ctfdata = read_section_stabs (abfd, sect_name, &ctfsize, NULL)) == NULL)
3290 bfd_fatal (bfd_get_filename (abfd));
3291
3292 if (parent_name
3293 && (parentdata = read_section_stabs (abfd, parent_name, &parentsize,
3294 NULL)) == NULL)
3295 bfd_fatal (bfd_get_filename (abfd));
3296
3297 /* Load the CTF file and dump it. */
3298
3299 ctfsect = make_ctfsect (sect_name, ctfdata, ctfsize);
3300 if ((ctfa = ctf_bfdopen_ctfsect (abfd, &ctfsect, &err)) == NULL)
3301 {
3302 non_fatal (_("CTF open failure: %s\n"), ctf_errmsg (err));
3303 bfd_fatal (bfd_get_filename (abfd));
3304 }
3305
3306 if (parentdata)
3307 {
3308 ctfsect = make_ctfsect (parent_name, parentdata, parentsize);
3309 if ((parenta = ctf_bfdopen_ctfsect (abfd, &ctfsect, &err)) == NULL)
3310 {
3311 non_fatal (_("CTF open failure: %s\n"), ctf_errmsg (err));
3312 bfd_fatal (bfd_get_filename (abfd));
3313 }
3314
3315 /* Assume that the applicable parent archive member is the default one.
3316 (This is what all known implementations are expected to do, if they
3317 put CTFs and their parents in archives together.) */
3318 if ((parent = ctf_arc_open_by_name (parenta, NULL, &err)) == NULL)
3319 {
3320 non_fatal (_("CTF open failure: %s\n"), ctf_errmsg (err));
3321 bfd_fatal (bfd_get_filename (abfd));
3322 }
3323 }
3324
3325 printf (_("Contents of CTF section %s:\n"), sanitize_string (sect_name));
3326
3327 ctf_archive_iter (ctfa, dump_ctf_archive_member, parent);
3328 ctf_file_close (parent);
3329 ctf_close (ctfa);
3330 ctf_close (parenta);
3331 free (parentdata);
3332 free (ctfdata);
3333 }
3334
3335 \f
3336 static void
3337 dump_bfd_private_header (bfd *abfd)
3338 {
3339 if (!bfd_print_private_bfd_data (abfd, stdout))
3340 non_fatal (_("warning: private headers incomplete: %s"),
3341 bfd_errmsg (bfd_get_error ()));
3342 }
3343
3344 static void
3345 dump_target_specific (bfd *abfd)
3346 {
3347 const struct objdump_private_desc * const *desc;
3348 struct objdump_private_option *opt;
3349 char *e, *b;
3350
3351 /* Find the desc. */
3352 for (desc = objdump_private_vectors; *desc != NULL; desc++)
3353 if ((*desc)->filter (abfd))
3354 break;
3355
3356 if (*desc == NULL)
3357 {
3358 non_fatal (_("option -P/--private not supported by this file"));
3359 return;
3360 }
3361
3362 /* Clear all options. */
3363 for (opt = (*desc)->options; opt->name; opt++)
3364 opt->selected = FALSE;
3365
3366 /* Decode options. */
3367 b = dump_private_options;
3368 do
3369 {
3370 e = strchr (b, ',');
3371
3372 if (e)
3373 *e = 0;
3374
3375 for (opt = (*desc)->options; opt->name; opt++)
3376 if (strcmp (opt->name, b) == 0)
3377 {
3378 opt->selected = TRUE;
3379 break;
3380 }
3381 if (opt->name == NULL)
3382 non_fatal (_("target specific dump '%s' not supported"), b);
3383
3384 if (e)
3385 {
3386 *e = ',';
3387 b = e + 1;
3388 }
3389 }
3390 while (e != NULL);
3391
3392 /* Dump. */
3393 (*desc)->dump (abfd);
3394 }
3395 \f
3396 /* Display a section in hexadecimal format with associated characters.
3397 Each line prefixed by the zero padded address. */
3398
3399 static void
3400 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
3401 {
3402 bfd_byte *data = NULL;
3403 bfd_size_type datasize;
3404 bfd_vma addr_offset;
3405 bfd_vma start_offset;
3406 bfd_vma stop_offset;
3407 unsigned int opb = bfd_octets_per_byte (abfd);
3408 /* Bytes per line. */
3409 const int onaline = 16;
3410 char buf[64];
3411 int count;
3412 int width;
3413
3414 if ((section->flags & SEC_HAS_CONTENTS) == 0)
3415 return;
3416
3417 if (! process_section_p (section))
3418 return;
3419
3420 if ((datasize = bfd_section_size (abfd, section)) == 0)
3421 return;
3422
3423 /* Compute the address range to display. */
3424 if (start_address == (bfd_vma) -1
3425 || start_address < section->vma)
3426 start_offset = 0;
3427 else
3428 start_offset = start_address - section->vma;
3429
3430 if (stop_address == (bfd_vma) -1)
3431 stop_offset = datasize / opb;
3432 else
3433 {
3434 if (stop_address < section->vma)
3435 stop_offset = 0;
3436 else
3437 stop_offset = stop_address - section->vma;
3438
3439 if (stop_offset > datasize / opb)
3440 stop_offset = datasize / opb;
3441 }
3442
3443 if (start_offset >= stop_offset)
3444 return;
3445
3446 printf (_("Contents of section %s:"), sanitize_string (section->name));
3447 if (display_file_offsets)
3448 printf (_(" (Starting at file offset: 0x%lx)"),
3449 (unsigned long) (section->filepos + start_offset));
3450 printf ("\n");
3451
3452 if (!bfd_get_full_section_contents (abfd, section, &data))
3453 {
3454 non_fatal (_("Reading section %s failed because: %s"),
3455 section->name, bfd_errmsg (bfd_get_error ()));
3456 return;
3457 }
3458
3459 width = 4;
3460
3461 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
3462 if (strlen (buf) >= sizeof (buf))
3463 abort ();
3464
3465 count = 0;
3466 while (buf[count] == '0' && buf[count+1] != '\0')
3467 count++;
3468 count = strlen (buf) - count;
3469 if (count > width)
3470 width = count;
3471
3472 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
3473 if (strlen (buf) >= sizeof (buf))
3474 abort ();
3475
3476 count = 0;
3477 while (buf[count] == '0' && buf[count+1] != '\0')
3478 count++;
3479 count = strlen (buf) - count;
3480 if (count > width)
3481 width = count;
3482
3483 for (addr_offset = start_offset;
3484 addr_offset < stop_offset; addr_offset += onaline / opb)
3485 {
3486 bfd_size_type j;
3487
3488 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
3489 count = strlen (buf);
3490 if ((size_t) count >= sizeof (buf))
3491 abort ();
3492
3493 putchar (' ');
3494 while (count < width)
3495 {
3496 putchar ('0');
3497 count++;
3498 }
3499 fputs (buf + count - width, stdout);
3500 putchar (' ');
3501
3502 for (j = addr_offset * opb;
3503 j < addr_offset * opb + onaline; j++)
3504 {
3505 if (j < stop_offset * opb)
3506 printf ("%02x", (unsigned) (data[j]));
3507 else
3508 printf (" ");
3509 if ((j & 3) == 3)
3510 printf (" ");
3511 }
3512
3513 printf (" ");
3514 for (j = addr_offset * opb;
3515 j < addr_offset * opb + onaline; j++)
3516 {
3517 if (j >= stop_offset * opb)
3518 printf (" ");
3519 else
3520 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
3521 }
3522 putchar ('\n');
3523 }
3524 free (data);
3525 }
3526
3527 /* Actually display the various requested regions. */
3528
3529 static void
3530 dump_data (bfd *abfd)
3531 {
3532 bfd_map_over_sections (abfd, dump_section, NULL);
3533 }
3534
3535 /* Should perhaps share code and display with nm? */
3536
3537 static void
3538 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
3539 {
3540 asymbol **current;
3541 long max_count;
3542 long count;
3543
3544 if (dynamic)
3545 {
3546 current = dynsyms;
3547 max_count = dynsymcount;
3548 printf ("DYNAMIC SYMBOL TABLE:\n");
3549 }
3550 else
3551 {
3552 current = syms;
3553 max_count = symcount;
3554 printf ("SYMBOL TABLE:\n");
3555 }
3556
3557 if (max_count == 0)
3558 printf (_("no symbols\n"));
3559
3560 for (count = 0; count < max_count; count++)
3561 {
3562 bfd *cur_bfd;
3563
3564 if (*current == NULL)
3565 printf (_("no information for symbol number %ld\n"), count);
3566
3567 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
3568 printf (_("could not determine the type of symbol number %ld\n"),
3569 count);
3570
3571 else if (process_section_p ((* current)->section)
3572 && (dump_special_syms
3573 || !bfd_is_target_special_symbol (cur_bfd, *current)))
3574 {
3575 const char *name = (*current)->name;
3576
3577 if (do_demangle && name != NULL && *name != '\0')
3578 {
3579 char *alloc;
3580
3581 /* If we want to demangle the name, we demangle it
3582 here, and temporarily clobber it while calling
3583 bfd_print_symbol. FIXME: This is a gross hack. */
3584 alloc = bfd_demangle (cur_bfd, name, demangle_flags);
3585 if (alloc != NULL)
3586 (*current)->name = alloc;
3587 bfd_print_symbol (cur_bfd, stdout, *current,
3588 bfd_print_symbol_all);
3589 if (alloc != NULL)
3590 {
3591 (*current)->name = name;
3592 free (alloc);
3593 }
3594 }
3595 else
3596 bfd_print_symbol (cur_bfd, stdout, *current,
3597 bfd_print_symbol_all);
3598 printf ("\n");
3599 }
3600
3601 current++;
3602 }
3603 printf ("\n\n");
3604 }
3605 \f
3606 static void
3607 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
3608 {
3609 arelent **p;
3610 char *last_filename, *last_functionname;
3611 unsigned int last_line;
3612 unsigned int last_discriminator;
3613
3614 /* Get column headers lined up reasonably. */
3615 {
3616 static int width;
3617
3618 if (width == 0)
3619 {
3620 char buf[30];
3621
3622 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
3623 width = strlen (buf) - 7;
3624 }
3625 printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
3626 }
3627
3628 last_filename = NULL;
3629 last_functionname = NULL;
3630 last_line = 0;
3631 last_discriminator = 0;
3632
3633 for (p = relpp; relcount && *p != NULL; p++, relcount--)
3634 {
3635 arelent *q = *p;
3636 const char *filename, *functionname;
3637 unsigned int linenumber;
3638 unsigned int discriminator;
3639 const char *sym_name;
3640 const char *section_name;
3641 bfd_vma addend2 = 0;
3642
3643 if (start_address != (bfd_vma) -1
3644 && q->address < start_address)
3645 continue;
3646 if (stop_address != (bfd_vma) -1
3647 && q->address > stop_address)
3648 continue;
3649
3650 if (with_line_numbers
3651 && sec != NULL
3652 && bfd_find_nearest_line_discriminator (abfd, sec, syms, q->address,
3653 &filename, &functionname,
3654 &linenumber, &discriminator))
3655 {
3656 if (functionname != NULL
3657 && (last_functionname == NULL
3658 || strcmp (functionname, last_functionname) != 0))
3659 {
3660 printf ("%s():\n", sanitize_string (functionname));
3661 if (last_functionname != NULL)
3662 free (last_functionname);
3663 last_functionname = xstrdup (functionname);
3664 }
3665
3666 if (linenumber > 0
3667 && (linenumber != last_line
3668 || (filename != NULL
3669 && last_filename != NULL
3670 && filename_cmp (filename, last_filename) != 0)
3671 || (discriminator != last_discriminator)))
3672 {
3673 if (discriminator > 0)
3674 printf ("%s:%u\n", filename == NULL ? "???" :
3675 sanitize_string (filename), linenumber);
3676 else
3677 printf ("%s:%u (discriminator %u)\n",
3678 filename == NULL ? "???" : sanitize_string (filename),
3679 linenumber, discriminator);
3680 last_line = linenumber;
3681 last_discriminator = discriminator;
3682 if (last_filename != NULL)
3683 free (last_filename);
3684 if (filename == NULL)
3685 last_filename = NULL;
3686 else
3687 last_filename = xstrdup (filename);
3688 }
3689 }
3690
3691 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
3692 {
3693 sym_name = (*(q->sym_ptr_ptr))->name;
3694 section_name = (*(q->sym_ptr_ptr))->section->name;
3695 }
3696 else
3697 {
3698 sym_name = NULL;
3699 section_name = NULL;
3700 }
3701
3702 bfd_printf_vma (abfd, q->address);
3703 if (q->howto == NULL)
3704 printf (" *unknown* ");
3705 else if (q->howto->name)
3706 {
3707 const char *name = q->howto->name;
3708
3709 /* R_SPARC_OLO10 relocations contain two addends.
3710 But because 'arelent' lacks enough storage to
3711 store them both, the 64-bit ELF Sparc backend
3712 records this as two relocations. One R_SPARC_LO10
3713 and one R_SPARC_13, both pointing to the same
3714 address. This is merely so that we have some
3715 place to store both addend fields.
3716
3717 Undo this transformation, otherwise the output
3718 will be confusing. */
3719 if (abfd->xvec->flavour == bfd_target_elf_flavour
3720 && elf_tdata(abfd)->elf_header->e_machine == EM_SPARCV9
3721 && relcount > 1
3722 && !strcmp (q->howto->name, "R_SPARC_LO10"))
3723 {
3724 arelent *q2 = *(p + 1);
3725 if (q2 != NULL
3726 && q2->howto
3727 && q->address == q2->address
3728 && !strcmp (q2->howto->name, "R_SPARC_13"))
3729 {
3730 name = "R_SPARC_OLO10";
3731 addend2 = q2->addend;
3732 p++;
3733 }
3734 }
3735 printf (" %-16s ", name);
3736 }
3737 else
3738 printf (" %-16d ", q->howto->type);
3739
3740 if (sym_name)
3741 {
3742 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
3743 }
3744 else
3745 {
3746 if (section_name == NULL)
3747 section_name = "*unknown*";
3748 printf ("[%s]", sanitize_string (section_name));
3749 }
3750
3751 if (q->addend)
3752 {
3753 bfd_signed_vma addend = q->addend;
3754 if (addend < 0)
3755 {
3756 printf ("-0x");
3757 addend = -addend;
3758 }
3759 else
3760 printf ("+0x");
3761 bfd_printf_vma (abfd, addend);
3762 }
3763 if (addend2)
3764 {
3765 printf ("+0x");
3766 bfd_printf_vma (abfd, addend2);
3767 }
3768
3769 printf ("\n");
3770 }
3771
3772 if (last_filename != NULL)
3773 free (last_filename);
3774 if (last_functionname != NULL)
3775 free (last_functionname);
3776 }
3777
3778 static void
3779 dump_relocs_in_section (bfd *abfd,
3780 asection *section,
3781 void *dummy ATTRIBUTE_UNUSED)
3782 {
3783 arelent **relpp = NULL;
3784 long relcount;
3785 long relsize;
3786
3787 if ( bfd_is_abs_section (section)
3788 || bfd_is_und_section (section)
3789 || bfd_is_com_section (section)
3790 || (! process_section_p (section))
3791 || ((section->flags & SEC_RELOC) == 0))
3792 return;
3793
3794 printf ("RELOCATION RECORDS FOR [%s]:", sanitize_string (section->name));
3795
3796 relsize = bfd_get_reloc_upper_bound (abfd, section);
3797 if (relsize == 0)
3798 {
3799 printf (" (none)\n\n");
3800 return;
3801 }
3802
3803 if (relsize < 0)
3804 relcount = relsize;
3805 else
3806 {
3807 relpp = (arelent **) xmalloc (relsize);
3808 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
3809 }
3810
3811 if (relcount < 0)
3812 {
3813 printf ("\n");
3814 non_fatal (_("failed to read relocs in: %s"),
3815 sanitize_string (bfd_get_filename (abfd)));
3816 bfd_fatal (_("error message was"));
3817 }
3818 else if (relcount == 0)
3819 printf (" (none)\n\n");
3820 else
3821 {
3822 printf ("\n");
3823 dump_reloc_set (abfd, section, relpp, relcount);
3824 printf ("\n\n");
3825 }
3826 free (relpp);
3827 }
3828
3829 static void
3830 dump_relocs (bfd *abfd)
3831 {
3832 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
3833 }
3834
3835 static void
3836 dump_dynamic_relocs (bfd *abfd)
3837 {
3838 long relsize;
3839 arelent **relpp;
3840 long relcount;
3841
3842 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
3843 if (relsize < 0)
3844 bfd_fatal (bfd_get_filename (abfd));
3845
3846 printf ("DYNAMIC RELOCATION RECORDS");
3847
3848 if (relsize == 0)
3849 printf (" (none)\n\n");
3850 else
3851 {
3852 relpp = (arelent **) xmalloc (relsize);
3853 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
3854
3855 if (relcount < 0)
3856 bfd_fatal (bfd_get_filename (abfd));
3857 else if (relcount == 0)
3858 printf (" (none)\n\n");
3859 else
3860 {
3861 printf ("\n");
3862 dump_reloc_set (abfd, NULL, relpp, relcount);
3863 printf ("\n\n");
3864 }
3865 free (relpp);
3866 }
3867 }
3868
3869 /* Creates a table of paths, to search for source files. */
3870
3871 static void
3872 add_include_path (const char *path)
3873 {
3874 if (path[0] == 0)
3875 return;
3876 include_path_count++;
3877 include_paths = (const char **)
3878 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
3879 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3880 if (path[1] == ':' && path[2] == 0)
3881 path = concat (path, ".", (const char *) 0);
3882 #endif
3883 include_paths[include_path_count - 1] = path;
3884 }
3885
3886 static void
3887 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
3888 asection *section,
3889 void *arg)
3890 {
3891 if ((section->flags & SEC_DEBUGGING) == 0)
3892 {
3893 bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
3894 section->vma += adjust_section_vma;
3895 if (*has_reloc_p)
3896 section->lma += adjust_section_vma;
3897 }
3898 }
3899
3900 /* Return the sign-extended form of an ARCH_SIZE sized VMA. */
3901
3902 static bfd_vma
3903 sign_extend_address (bfd *abfd ATTRIBUTE_UNUSED,
3904 bfd_vma vma,
3905 unsigned arch_size)
3906 {
3907 bfd_vma mask;
3908 mask = (bfd_vma) 1 << (arch_size - 1);
3909 return (((vma & ((mask << 1) - 1)) ^ mask) - mask);
3910 }
3911
3912 /* Dump selected contents of ABFD. */
3913
3914 static void
3915 dump_bfd (bfd *abfd, bfd_boolean is_mainfile)
3916 {
3917 const struct elf_backend_data * bed;
3918
3919 if (bfd_big_endian (abfd))
3920 byte_get = byte_get_big_endian;
3921 else if (bfd_little_endian (abfd))
3922 byte_get = byte_get_little_endian;
3923 else
3924 byte_get = NULL;
3925
3926 /* Load any separate debug information files.
3927 We do this now and without checking do_follow_links because separate
3928 debug info files may contain symbol tables that we will need when
3929 displaying information about the main file. Any memory allocated by
3930 load_separate_debug_files will be released when we call
3931 free_debug_memory below.
3932
3933 The test on is_mainfile is there because the chain of separate debug
3934 info files is a global variable shared by all invocations of dump_bfd. */
3935 if (is_mainfile)
3936 {
3937 load_separate_debug_files (abfd, bfd_get_filename (abfd));
3938
3939 /* If asked to do so, recursively dump the separate files. */
3940 if (do_follow_links)
3941 {
3942 separate_info * i;
3943
3944 for (i = first_separate_info; i != NULL; i = i->next)
3945 dump_bfd (i->handle, FALSE);
3946 }
3947 }
3948
3949 /* Adjust user-specified start and stop limits for targets that use
3950 signed addresses. */
3951 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
3952 && (bed = get_elf_backend_data (abfd)) != NULL
3953 && bed->sign_extend_vma)
3954 {
3955 start_address = sign_extend_address (abfd, start_address,
3956 bed->s->arch_size);
3957 stop_address = sign_extend_address (abfd, stop_address,
3958 bed->s->arch_size);
3959 }
3960
3961 /* If we are adjusting section VMA's, change them all now. Changing
3962 the BFD information is a hack. However, we must do it, or
3963 bfd_find_nearest_line will not do the right thing. */
3964 if (adjust_section_vma != 0)
3965 {
3966 bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
3967 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
3968 }
3969
3970 if (! dump_debugging_tags && ! suppress_bfd_header)
3971 printf (_("\n%s: file format %s\n"),
3972 sanitize_string (bfd_get_filename (abfd)),
3973 abfd->xvec->name);
3974 if (dump_ar_hdrs)
3975 print_arelt_descr (stdout, abfd, TRUE, FALSE);
3976 if (dump_file_header)
3977 dump_bfd_header (abfd);
3978 if (dump_private_headers)
3979 dump_bfd_private_header (abfd);
3980 if (dump_private_options != NULL)
3981 dump_target_specific (abfd);
3982 if (! dump_debugging_tags && ! suppress_bfd_header)
3983 putchar ('\n');
3984
3985 if (dump_symtab
3986 || dump_reloc_info
3987 || disassemble
3988 || dump_debugging
3989 || dump_dwarf_section_info)
3990 {
3991 syms = slurp_symtab (abfd);
3992
3993 /* If following links, load any symbol tables from the linked files as well. */
3994 if (do_follow_links && is_mainfile)
3995 {
3996 separate_info * i;
3997
3998 for (i = first_separate_info; i != NULL; i = i->next)
3999 {
4000 asymbol ** extra_syms;
4001 long old_symcount = symcount;
4002
4003 extra_syms = slurp_symtab (i->handle);
4004
4005 if (extra_syms)
4006 {
4007 if (old_symcount == 0)
4008 {
4009 syms = extra_syms;
4010 }
4011 else
4012 {
4013 syms = xrealloc (syms, (symcount + old_symcount) * sizeof (asymbol *));
4014 memcpy (syms + old_symcount,
4015 extra_syms,
4016 symcount * sizeof (asymbol *));
4017 }
4018 }
4019
4020 symcount += old_symcount;
4021 }
4022 }
4023 }
4024
4025 if (dump_section_headers)
4026 dump_headers (abfd);
4027
4028 if (dump_dynamic_symtab || dump_dynamic_reloc_info
4029 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
4030 dynsyms = slurp_dynamic_symtab (abfd);
4031
4032 if (disassemble)
4033 {
4034 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
4035 dynsymcount, dynsyms, &synthsyms);
4036 if (synthcount < 0)
4037 synthcount = 0;
4038 }
4039
4040 if (dump_symtab)
4041 dump_symbols (abfd, FALSE);
4042 if (dump_dynamic_symtab)
4043 dump_symbols (abfd, TRUE);
4044 if (dump_dwarf_section_info)
4045 dump_dwarf (abfd);
4046 if (dump_ctf_section_info)
4047 dump_ctf (abfd, dump_ctf_section_name, dump_ctf_parent_name);
4048 if (dump_stab_section_info)
4049 dump_stabs (abfd);
4050 if (dump_reloc_info && ! disassemble)
4051 dump_relocs (abfd);
4052 if (dump_dynamic_reloc_info && ! disassemble)
4053 dump_dynamic_relocs (abfd);
4054 if (dump_section_contents)
4055 dump_data (abfd);
4056 if (disassemble)
4057 disassemble_data (abfd);
4058
4059 if (dump_debugging)
4060 {
4061 void *dhandle;
4062
4063 dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
4064 if (dhandle != NULL)
4065 {
4066 if (!print_debugging_info (stdout, dhandle, abfd, syms,
4067 bfd_demangle,
4068 dump_debugging_tags ? TRUE : FALSE))
4069 {
4070 non_fatal (_("%s: printing debugging information failed"),
4071 bfd_get_filename (abfd));
4072 exit_status = 1;
4073 }
4074
4075 free (dhandle);
4076 }
4077 /* PR 6483: If there was no STABS debug info in the file, try
4078 DWARF instead. */
4079 else if (! dump_dwarf_section_info)
4080 {
4081 dwarf_select_sections_all ();
4082 dump_dwarf (abfd);
4083 }
4084 }
4085
4086 if (syms)
4087 {
4088 free (syms);
4089 syms = NULL;
4090 }
4091
4092 if (dynsyms)
4093 {
4094 free (dynsyms);
4095 dynsyms = NULL;
4096 }
4097
4098 if (synthsyms)
4099 {
4100 free (synthsyms);
4101 synthsyms = NULL;
4102 }
4103
4104 symcount = 0;
4105 dynsymcount = 0;
4106 synthcount = 0;
4107
4108 if (is_mainfile)
4109 free_debug_memory ();
4110 }
4111
4112 static void
4113 display_object_bfd (bfd *abfd)
4114 {
4115 char **matching;
4116
4117 if (bfd_check_format_matches (abfd, bfd_object, &matching))
4118 {
4119 dump_bfd (abfd, TRUE);
4120 return;
4121 }
4122
4123 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
4124 {
4125 nonfatal (bfd_get_filename (abfd));
4126 list_matching_formats (matching);
4127 free (matching);
4128 return;
4129 }
4130
4131 if (bfd_get_error () != bfd_error_file_not_recognized)
4132 {
4133 nonfatal (bfd_get_filename (abfd));
4134 return;
4135 }
4136
4137 if (bfd_check_format_matches (abfd, bfd_core, &matching))
4138 {
4139 dump_bfd (abfd, TRUE);
4140 return;
4141 }
4142
4143 nonfatal (bfd_get_filename (abfd));
4144
4145 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
4146 {
4147 list_matching_formats (matching);
4148 free (matching);
4149 }
4150 }
4151
4152 static void
4153 display_any_bfd (bfd *file, int level)
4154 {
4155 /* Decompress sections unless dumping the section contents. */
4156 if (!dump_section_contents)
4157 file->flags |= BFD_DECOMPRESS;
4158
4159 /* If the file is an archive, process all of its elements. */
4160 if (bfd_check_format (file, bfd_archive))
4161 {
4162 bfd *arfile = NULL;
4163 bfd *last_arfile = NULL;
4164
4165 if (level == 0)
4166 printf (_("In archive %s:\n"), sanitize_string (bfd_get_filename (file)));
4167 else if (level > 100)
4168 {
4169 /* Prevent corrupted files from spinning us into an
4170 infinite loop. 100 is an arbitrary heuristic. */
4171 fatal (_("Archive nesting is too deep"));
4172 return;
4173 }
4174 else
4175 printf (_("In nested archive %s:\n"),
4176 sanitize_string (bfd_get_filename (file)));
4177
4178 for (;;)
4179 {
4180 bfd_set_error (bfd_error_no_error);
4181
4182 arfile = bfd_openr_next_archived_file (file, arfile);
4183 if (arfile == NULL)
4184 {
4185 if (bfd_get_error () != bfd_error_no_more_archived_files)
4186 nonfatal (bfd_get_filename (file));
4187 break;
4188 }
4189
4190 display_any_bfd (arfile, level + 1);
4191
4192 if (last_arfile != NULL)
4193 {
4194 bfd_close (last_arfile);
4195 /* PR 17512: file: ac585d01. */
4196 if (arfile == last_arfile)
4197 {
4198 last_arfile = NULL;
4199 break;
4200 }
4201 }
4202 last_arfile = arfile;
4203 }
4204
4205 if (last_arfile != NULL)
4206 bfd_close (last_arfile);
4207 }
4208 else
4209 display_object_bfd (file);
4210 }
4211
4212 static void
4213 display_file (char *filename, char *target, bfd_boolean last_file)
4214 {
4215 bfd *file;
4216
4217 if (get_file_size (filename) < 1)
4218 {
4219 exit_status = 1;
4220 return;
4221 }
4222
4223 file = bfd_openr (filename, target);
4224 if (file == NULL)
4225 {
4226 nonfatal (filename);
4227 return;
4228 }
4229
4230 display_any_bfd (file, 0);
4231
4232 /* This is an optimization to improve the speed of objdump, especially when
4233 dumping a file with lots of associated debug informatiom. Calling
4234 bfd_close on such a file can take a non-trivial amount of time as there
4235 are lots of lists to walk and buffers to free. This is only really
4236 necessary however if we are about to load another file and we need the
4237 memory back. Otherwise, if we are about to exit, then we can save (a lot
4238 of) time by only doing a quick close, and allowing the OS to reclaim the
4239 memory for us. */
4240 if (! last_file)
4241 bfd_close (file);
4242 else
4243 bfd_close_all_done (file);
4244 }
4245 \f
4246 int
4247 main (int argc, char **argv)
4248 {
4249 int c;
4250 char *target = default_target;
4251 bfd_boolean seenflag = FALSE;
4252
4253 #if defined (HAVE_SETLOCALE)
4254 #if defined (HAVE_LC_MESSAGES)
4255 setlocale (LC_MESSAGES, "");
4256 #endif
4257 setlocale (LC_CTYPE, "");
4258 #endif
4259
4260 bindtextdomain (PACKAGE, LOCALEDIR);
4261 textdomain (PACKAGE);
4262
4263 program_name = *argv;
4264 xmalloc_set_program_name (program_name);
4265 bfd_set_error_program_name (program_name);
4266
4267 START_PROGRESS (program_name, 0);
4268
4269 expandargv (&argc, &argv);
4270
4271 if (bfd_init () != BFD_INIT_MAGIC)
4272 fatal (_("fatal error: libbfd ABI mismatch"));
4273 set_default_bfd_target ();
4274
4275 while ((c = getopt_long (argc, argv,
4276 "pP:ib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
4277 long_options, (int *) 0))
4278 != EOF)
4279 {
4280 switch (c)
4281 {
4282 case 0:
4283 break; /* We've been given a long option. */
4284 case 'm':
4285 machine = optarg;
4286 break;
4287 case 'M':
4288 {
4289 char *options;
4290 if (disassembler_options)
4291 /* Ignore potential memory leak for now. */
4292 options = concat (disassembler_options, ",",
4293 optarg, (const char *) NULL);
4294 else
4295 options = optarg;
4296 disassembler_options = remove_whitespace_and_extra_commas (options);
4297 }
4298 break;
4299 case 'j':
4300 add_only (optarg);
4301 break;
4302 case 'F':
4303 display_file_offsets = TRUE;
4304 break;
4305 case 'l':
4306 with_line_numbers = TRUE;
4307 break;
4308 case 'b':
4309 target = optarg;
4310 break;
4311 case 'C':
4312 do_demangle = TRUE;
4313 if (optarg != NULL)
4314 {
4315 enum demangling_styles style;
4316
4317 style = cplus_demangle_name_to_style (optarg);
4318 if (style == unknown_demangling)
4319 fatal (_("unknown demangling style `%s'"),
4320 optarg);
4321
4322 cplus_demangle_set_style (style);
4323 }
4324 break;
4325 case OPTION_RECURSE_LIMIT:
4326 demangle_flags &= ~ DMGL_NO_RECURSE_LIMIT;
4327 break;
4328 case OPTION_NO_RECURSE_LIMIT:
4329 demangle_flags |= DMGL_NO_RECURSE_LIMIT;
4330 break;
4331 case 'w':
4332 do_wide = wide_output = TRUE;
4333 break;
4334 case OPTION_ADJUST_VMA:
4335 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
4336 break;
4337 case OPTION_START_ADDRESS:
4338 start_address = parse_vma (optarg, "--start-address");
4339 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
4340 fatal (_("error: the start address should be before the end address"));
4341 break;
4342 case OPTION_STOP_ADDRESS:
4343 stop_address = parse_vma (optarg, "--stop-address");
4344 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
4345 fatal (_("error: the stop address should be after the start address"));
4346 break;
4347 case OPTION_PREFIX:
4348 prefix = optarg;
4349 prefix_length = strlen (prefix);
4350 /* Remove an unnecessary trailing '/' */
4351 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
4352 prefix_length--;
4353 break;
4354 case OPTION_PREFIX_STRIP:
4355 prefix_strip = atoi (optarg);
4356 if (prefix_strip < 0)
4357 fatal (_("error: prefix strip must be non-negative"));
4358 break;
4359 case OPTION_INSN_WIDTH:
4360 insn_width = strtoul (optarg, NULL, 0);
4361 if (insn_width <= 0)
4362 fatal (_("error: instruction width must be positive"));
4363 break;
4364 case OPTION_INLINES:
4365 unwind_inlines = TRUE;
4366 break;
4367 case 'E':
4368 if (strcmp (optarg, "B") == 0)
4369 endian = BFD_ENDIAN_BIG;
4370 else if (strcmp (optarg, "L") == 0)
4371 endian = BFD_ENDIAN_LITTLE;
4372 else
4373 {
4374 nonfatal (_("unrecognized -E option"));
4375 usage (stderr, 1);
4376 }
4377 break;
4378 case OPTION_ENDIAN:
4379 if (strncmp (optarg, "big", strlen (optarg)) == 0)
4380 endian = BFD_ENDIAN_BIG;
4381 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
4382 endian = BFD_ENDIAN_LITTLE;
4383 else
4384 {
4385 non_fatal (_("unrecognized --endian type `%s'"), optarg);
4386 exit_status = 1;
4387 usage (stderr, 1);
4388 }
4389 break;
4390
4391 case 'f':
4392 dump_file_header = TRUE;
4393 seenflag = TRUE;
4394 break;
4395 case 'i':
4396 formats_info = TRUE;
4397 seenflag = TRUE;
4398 break;
4399 case 'I':
4400 add_include_path (optarg);
4401 break;
4402 case 'p':
4403 dump_private_headers = TRUE;
4404 seenflag = TRUE;
4405 break;
4406 case 'P':
4407 dump_private_options = optarg;
4408 seenflag = TRUE;
4409 break;
4410 case 'x':
4411 dump_private_headers = TRUE;
4412 dump_symtab = TRUE;
4413 dump_reloc_info = TRUE;
4414 dump_file_header = TRUE;
4415 dump_ar_hdrs = TRUE;
4416 dump_section_headers = TRUE;
4417 seenflag = TRUE;
4418 break;
4419 case 't':
4420 dump_symtab = TRUE;
4421 seenflag = TRUE;
4422 break;
4423 case 'T':
4424 dump_dynamic_symtab = TRUE;
4425 seenflag = TRUE;
4426 break;
4427 case 'd':
4428 disassemble = TRUE;
4429 seenflag = TRUE;
4430 disasm_sym = optarg;
4431 break;
4432 case 'z':
4433 disassemble_zeroes = TRUE;
4434 break;
4435 case 'D':
4436 disassemble = TRUE;
4437 disassemble_all = TRUE;
4438 seenflag = TRUE;
4439 break;
4440 case 'S':
4441 disassemble = TRUE;
4442 with_source_code = TRUE;
4443 seenflag = TRUE;
4444 break;
4445 case 'g':
4446 dump_debugging = 1;
4447 seenflag = TRUE;
4448 break;
4449 case 'e':
4450 dump_debugging = 1;
4451 dump_debugging_tags = 1;
4452 do_demangle = TRUE;
4453 seenflag = TRUE;
4454 break;
4455 case 'W':
4456 dump_dwarf_section_info = TRUE;
4457 seenflag = TRUE;
4458 if (optarg)
4459 dwarf_select_sections_by_letters (optarg);
4460 else
4461 dwarf_select_sections_all ();
4462 break;
4463 case OPTION_DWARF:
4464 dump_dwarf_section_info = TRUE;
4465 seenflag = TRUE;
4466 if (optarg)
4467 dwarf_select_sections_by_names (optarg);
4468 else
4469 dwarf_select_sections_all ();
4470 break;
4471 case OPTION_DWARF_DEPTH:
4472 {
4473 char *cp;
4474 dwarf_cutoff_level = strtoul (optarg, & cp, 0);
4475 }
4476 break;
4477 case OPTION_DWARF_START:
4478 {
4479 char *cp;
4480 dwarf_start_die = strtoul (optarg, & cp, 0);
4481 suppress_bfd_header = 1;
4482 }
4483 break;
4484 case OPTION_DWARF_CHECK:
4485 dwarf_check = TRUE;
4486 break;
4487 case OPTION_CTF:
4488 dump_ctf_section_info = TRUE;
4489 dump_ctf_section_name = xstrdup (optarg);
4490 seenflag = TRUE;
4491 break;
4492 case OPTION_CTF_PARENT:
4493 dump_ctf_parent_name = xstrdup (optarg);
4494 break;
4495 case 'G':
4496 dump_stab_section_info = TRUE;
4497 seenflag = TRUE;
4498 break;
4499 case 's':
4500 dump_section_contents = TRUE;
4501 seenflag = TRUE;
4502 break;
4503 case 'r':
4504 dump_reloc_info = TRUE;
4505 seenflag = TRUE;
4506 break;
4507 case 'R':
4508 dump_dynamic_reloc_info = TRUE;
4509 seenflag = TRUE;
4510 break;
4511 case 'a':
4512 dump_ar_hdrs = TRUE;
4513 seenflag = TRUE;
4514 break;
4515 case 'h':
4516 dump_section_headers = TRUE;
4517 seenflag = TRUE;
4518 break;
4519 case 'v':
4520 case 'V':
4521 show_version = TRUE;
4522 seenflag = TRUE;
4523 break;
4524
4525 case 'H':
4526 usage (stdout, 0);
4527 /* No need to set seenflag or to break - usage() does not return. */
4528 default:
4529 usage (stderr, 1);
4530 }
4531 }
4532
4533 if (show_version)
4534 print_version ("objdump");
4535
4536 if (!seenflag)
4537 usage (stderr, 2);
4538
4539 if (formats_info)
4540 exit_status = display_info ();
4541 else
4542 {
4543 if (optind == argc)
4544 display_file ("a.out", target, TRUE);
4545 else
4546 for (; optind < argc;)
4547 {
4548 display_file (argv[optind], target, optind == argc - 1);
4549 optind++;
4550 }
4551 }
4552
4553 free_only_list ();
4554 free (dump_ctf_section_name);
4555 free (dump_ctf_parent_name);
4556
4557 END_PROGRESS (program_name);
4558
4559 return exit_status;
4560 }
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